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Principles by Ray Dalio - Summary and Application

Updated: Feb 3, 2022

Here are my key takeaways from the book Principles by Ray Dalio. Out of all the books I've read and all the things I've learned in school and in life so far, the lessons from this book are in the top 10% that I repeatedly refer back to.

I try to write concisely, and this article is the longest book summary I've written, and that's because there's just so many gems from this book. I also reported on how I actually used the learnings in my own life so that it's not just empty knowledge.

This book is about the timeless principles for making decision. In our lives, we make decision after decision, and one could argue that the quality o your life is dependent on the quality of your decisions. Hence, honing your decision-making abilities is well-worth the effort.

The book has three parts. Part 1 is about the author’s journey, aimed at setting a context for his principles. Part 2 is about his life principles. Part 3 is about his work principles. The author states that Part 2 is the main focus on the book, and he wishes for everyone to read Part 2 fully.

For the sake of brevity, I will just go over the Part 2 (Life Principles) in this article. I don’t see Part 1 as needing any analysis or summary, and Part 3 is essentially the life principles applied to a workplace setting.

Here is a click-able table of contents to help you navigate the article.

Q1: Why did the author write this book?

Ray Dalio has had tremendous success, both by outward measures and by his intrinsic measures. Outwardly, he has achieved tremendous wealth and fame. Inwardly, he has built meaningful work and strong relationships with family, friends, and colleagues. At the age of 68 when the book was published, Ray is now at a stage in his life where he wants to help others be successful rather than to be more successful himself.

For his employees at Bridgewater, he hopes this book will pass down his principles for decision-making and empower future employees to thrive without him. For everyone else, he wants them to find meaningful work and build meaningful relationships, which are the two things his principles focus on.

Although he offers his list of principles, readers don’t have to adopt each and every one of them. In fact, he wants every reader to thoughtfully choose which, if any, principles to adopt for themselves. He also wants people to discover their own principles and write them down, thereby improving their decisions and lives.

Q2: What are the Principles he mentions?

If you’re like me, you read the title “Principles” and wondered, “So, what are the principles he mentions anyway?” Here’s an extremely high-level summary.

Here are the five major principles from the book:

Principle 1: Embrace reality and deal with it.

We need to face our weaknesses and the difficulties of our situation rather than turning a blind eye towards them. To embrace reality, we need to observe the rules of life and nature. For example, anything in excess becomes unfavorable. To deal with reality, we need to own our outcomes and focus on the things in our control rather than complaining about things outside our control.

Principle 2: Use the 5-Step Process to get what you want out of life.

Here’s the 5-Step Process:

  1. Have clear goals

  2. Identify the problems that stand in your way

  3. Accurately diagnose the problems to get at their root causes

  4. Design plans that will get you around them

  5. Do what’s necessary to push these designs through to results

Principle 3: Be radically open-minded.

Let go of your ego, which is controlled by the amygdala in your brain. This takes conscious effort, but it does get easier with practice. Being open-minded means instead of focusing on being right, you focus on finding the truth, even if it means you were wrong. It also means having thoughtful and productive disagreements with people rather than emotion-heavy unproductive ones.

Principle 4: Understand that people are wired very differently.

Know the strengths and weaknesses of yourself and others. Just as we all have different physical attributes, we also all have different mental attributes. When you know yourself and others, you can better predicate their behavior and how well they will do certain things.

Principle 5: Learn how to make decisions effectively.

Use principles to systematize your decisions. When you have documented principles, you’ll see new situations as “just another one of those” to which you can apply a relevant principle. Logic is your best tool for understanding reality, while the biggest enemy is harmful emotions. For many decisions, we should also seek about other people who are credible on the topic of the decision.

When making decisions, we need to remember to connect the low-level details to the big picture. Never lose sight of why you’re doing something. In terms of getting information, there are typically 5-10 important factors to consider for any decision. Understand those factors really well and don’t waste time on more. The best choices are ones that have more pros than cons, not those that don’t have any cons at all.

Q3: What are the main ideas of the book?

There are 8 big lessons that I took away from this book:

  1. Pain + Reflection = Progress

  2. Success = Meaningful Work + Meaningful Relationships

  3. The Conscious and Subconscious Minds

  4. Overcome the Two barriers to Success

  5. Make Believability-Weighted Decisions

  6. People are Have Different and Objective Strengths and Weaknesses

  7. The 5-Step Process to Success

  8. Make Effective Decisions

Lesson 1: Pain + Reflection = Progress

"I have largely gotten past the pain of my mistake making and instead enjoy the pleasure that comes with learning from it."

—Ray Dalio

Like most people, I don’t like pain. It’s a natural biological response. For example, I hate having arguments because they’re emotionally painful. But if I avoid communicating about important topics because I’m scared of pain, then it’s very unhelpful.

So the first big takeaway for me is that life will always have (emotional) pain, and I need to embrace it if I want to move forward. Painful truth is better than comfortable delusion. That temporarily comfortable delusion will eventually come back to bite us.

The good news is that pain + reflection = progress, and progress is pleasurable. We can train ourselves to form a habit of reflecting on pain, difficulties, and challenges. After reflection, we need to take responsibility for the things in our control instead of complaining about the things outside our control. Only then will we be back on the path to success and happiness.

"If you can reflect deeply about your problems, they almost always shrink or disappear, because you almost always find a better way of dealing with them."

—Ray Dalio

Lesson 2: Success = Meaningful Work + Meaningful Relationships

“Meaningful work and meaningful relationships aren’t just nice things we choose for ourselves, they are genetically programmed into us.”

—Ray Dalio

Ray Dalio explains in the book, using evidence from neuroscientists and spiritual leaders, how the human brain is evolutionarily programmed to seek and enjoy social cooperation (meaningful relationships) and to benefit the group (meaningful work). When we do these two things, we enjoy life, and success comes as a byproduct.

"Meaningful work and meaningful relationships were and still are my primary goals and everything I did was for them. Making money was an incidental consequence of that." 

—Ray Dalio

Lesson 3: The Conscious and Subconscious Mind

When we understand our conscious and subconscious minds, we are able to overcome emotional hijacking, connect the two minds, and create productive habits.

"Be aware of your subconscious—of how it can both harm you and help you, and how by consciously reflecting on what comes out of it, perhaps with the help of others, you can become happier and more effective."

—Ray Dalio

Overcome Emotional Hijacking

Similar to animals, many of our decision-making drivers are unconscious. An animal doesn't "decide" to fly or hunt; it just follows instructions from the subconscious brain. We also have instructions coming from our subconscious brain.

In the human brain, the amygdala is responsible for emotions, and it is not accessible to your conscious mind. That means we are usually not aware of how our emotions are controlling us. The prefrontal cortex is responsible for logical thinking, and it is totally conscious, so we are aware of our logical thoughts.

Notice that the amygdala is closer to the center and stem of the brain, while the prefrontal cortex is in the outer region. That's because the amygdala is more primitive; it came before the prefrontal cortex. As a result, the amygdala is more powerful and can override the prefrontal cortex. Ray Dalio calls these events amygdala hijackings (emotional hijackings).

To give a simple example, if someone criticizes you, what happens? You feel your heart rate go up, your hands get sweaty, your muscles tighten. This is a fight-or-flight response similar to if you saw a hungry lion. Even though your rational brain says the criticism is helpful and not dangerous, the primitive brain hates it and overrides your body’s physiological response.

The good news is that if your train your conscious mind to recognize the physiological signs of these amygdala hijackings, (like rising heart rate in an argument), it can disobey the amygdala's instructions. For example, if you're having a disagreement with someone, and you notice your heart pounding louder and faster, you can consciously realize "Oh, my amygdala is unconsciously making me close-minded. I need to consciously switch to being open-minded."

"The biggest difference between people who guide their own personal evolution and achieve their goals and those who don't is that those who make progress reflect on what causes their amygdala hijackings. 

—Ray Dalio

Connect the Conscious to the Subconscious Mind

Have you ever had sudden realizations or great ideas pop up in the shower or while meditating? Why does that happen? It's because when we relax our conscious mind, it opens the communication with the subconscious mind.

When we are faced with a challenging task that requires creativity, our natural instinct is to think harder about it. But it might actually be more helpful to clear your mind through meditation and connect to your subconscious mind. The more your practice, the better you will get at it.

Create Productive Habits

Dalio defines habits as the strong tendency to keep doing what you have been doing, or to keep not doing what you have not been doing. Habits are controlled by an area of the brain called the basal ganglia.

Notice how the basal ganglia is also located near the center of the brain. Just like the amygdala, it is not accessible to our conscious mind, meaning our habits make us act unconsciously.

Good habits get you to do what the “upper-level you” wants, while bad habits are controlled by the “lower-level you”. If we pick our habits thoughtfully, then we radically improve the trajectory of our lives.

How can we create good habits? Dalio recommends the book The Power of Habit by Charles Duhigg, but he gives a short summary. Essentially, habits are a three-step loop:

  1. Cue – A trigger that tells your brain to go into automatic mode and which habit to use

  2. Routine – This can be physical, mental, or emotional

  3. Reward – This tells the brain if this loop is worth remembering for the future

For example, when Dalio experiences pain (cue), he uses that as a trigger to do reflection (that’s his routine). Then when he learns from the reflection, he feels pleasure (reward). As he does this more and more, his brain will naturally create that habit. Research suggests that if you stick with a habit for around 18 months, you will build a strong tendency to stick to it forever.

Dalio didn't go into too much detail in Principles, but in The Power of Habit, Duhigg explains that in order to change a habit, we must change the routine (the response). For example, I had a friend who was trying to get over social media addiction. In his article, he explained how his habit loop:

  • Cue: Feeling boredom and opening up social media application

  • Routine: Browse social media application

  • Reward: New knowledge and laughter

  • Craving: Desire for new knowledge and information/a break

He then made a new habit loop:

  • Cue: Feeling boredom and opening up social media application

  • Routine: Reading one paragraph from Kindle on phone

  • Reward: New knowledge, laughter, boredom relief.

  • Craving: Desire for new knowledge and information/a break

After one month, his social media usage went from 1.5 hours/day to 10 minutes per day.

Ray Dalio encourages all of us to develop the habit of self-reflection.

“The most valuable habit I’ve acquired is using pain to trigger quality reflections. If you can acquire this habit yourself, you will learn what causes your pain and what you can do about it, and it will have an enormous impact on your effectiveness.”

—Ray Dalio

Many people feel like they are fighting with themselves to overcome bad habits and make good ones. They get upset at themselves when they do a bad habit or can’t do a good habit. Ray Dalio comments that we shouldn’t fight with ourselves, but rather “the higher level you” (logical parent) needs to approach the “lower-level you” (emotional child) with loving kindness and persistence until the right habits are acquired, just like how a loving parent would treat a child.

Lesson 4: Overcome the Two Barriers to Success

The two barriers are the ego barrier and the blind spot barrier. These two barriers are rooted in the biology of the human brain. To overcome these two barriers, we need to practice radical open-mindedness.

Barrier 1: Ego

Ray Dalio defines the ego barrier as "your subliminal defense mechanisms that make it hard for you to accept your mistakes and weaknesses." The ego barrier resides in the amygdala. As mentioned before, the amygdala processes emotions and is subconscious. The ego wants to feel loved, to feel important, and to survive. It craves praise and views criticisms as attacks.

As mentioned previously, the amygdala (ego) also has the power to override the prefrontal cortex (the logical brain); Ray Dalio calls it amygdala hijacking. The good news is that we can train our conscious mind to recognize amygdala hijackings and then disobey the amygdala's instructions.

Barrier 2: Blind Spots

Ray Dalio defines blind spot barriers as “areas where your way of thinking prevents you from seeing things accurately.” It arises from the fact that everyone’s brains are wired differently.

Here are some examples:

  • Someone who naturally sees the big picture is more prone to be blind to the small details. And vice versa.

  • Someone who is naturally strong at thinking logically is more likely to miss out on other people's emotional cues. And vice versa.

  • Someone who is naturally strong at observing reality is weaker about imagining possibilities. And vice versa.

  • Someone who is naturally spontaneous is weaker at following rules and routines. And vice versa.

These traits aren't inherently good or habit; they're just different, and they're suitable to different situations. I go into great detail about these personality traits in my article on Myers-Briggs.

To adapt to our natural blind spots, we have three options:

  1. Teach your brain to work in ways that don’t come naturally. (e.g., thinking creatively if you’re not naturally creative)

  2. Using compensating mechanisms (like programmed reminders)

  3. Relying on the help of others who are strong where you’re weak

The first option is probably the hardest, but I heard Dalio say on an interview that people are usually able to improve a weakness by one standard deviation in the population. That means you probably won't make your weakness a strength, but you can make it not a big problem anymore. The third option is probably the most efficient but rarely used.

Solution: Radical Open-Mindedness

The author views Principle 4: Be Radically Open-Minded as the most important one because it explains how to work around the ego and blind spots.

"Radical open-mindedness is motivated by the genuine worry that you might not be seeing your choices optimally. It is the ability to effectively explore different points of view and different possibilities without letting your ego or your blind spots get in your way. It requires you to replace your attachment to always being right with the joy of learning what's true."

—Ray Dalio

The best relationships and results happen when both parties are open-minded. Open-minded people focus on finding the truth rather than on being right, and they can have thoughtful disagreements that don’t create emotional conflict.

The primitive brain (ego) is not open-minded. The rational brain is. By practicing open-mindedness, we are increasing the strength of our rational brain over our primitive brain.

From another perspective, open-mindedness can be even more important than being smart because it lets us seek out better answers than you could come up with just by yourself. But we have to critically assess what other people say.

"In a thoughtful disagreement, your goal is not to convince the other party that you are right—it is to find out which view is true and then decide what to do about it."

—Ray Dalio

To do this, we need to approach the conversation as a student trying to understand. We should ask questions rather than make statements. We need to be calm and dispassionate; we aren’t arguing, we’re openly exploring what’s true. People who change their minds because they learned something are the winners, where as those who stubbornly refuse to learn are the losers.

Here are some indicators of closed-minded versus open-minded people:

Essentially, closed-minded people are arrogant, emotional, and want to satisfy their ego. Open-minded people are humble, rational, and want the best result.

"Open-mindedness doesn't mean going along with what you don't believe in; it means considering the reasoning of others instead of illogically holding onto your own point of view."

—Ray Dalio

We also shouldn’t consider the views of everyone. We should only consider the viewpoints of believable people. These are people who have repeatedly accomplished something and have great explanations for how.

If one party is clearly more knowledgeable than the other, then the less-knowledgeable party should be a student and the more knowledgeable party should be a teacher. If both parties are equally believable, then they are peers, and it’s appropriate to debate thoughtfully.

This brings us to the next point.

Lesson 5: Make Believability-Weighted Decisions

There are some decisions we can make ourselves. But for many big and challenging decisions, we should seek the advice of others who have more expertise than us.

"While it is up to us to know what we want, others may know how to get it better than we do because they have more strengths where we have weaknesses, or more relevant knowledge and experience... Knowing when not to make your own decisions is one of the most important skills you can develop."

—Ray Dalio

But we also need to be careful who we ask.

“One of the most important decisions you can make is who you ask questions of. Make sure they're fully informed and believable... Listening to uninformed people is worse than having no answers at all."

—Ray Dalio

As mentioned before, believable people are those who have repeatedly and successfully accomplished something, AND they have great explanations for how they did it. To go a step further, we should look for open-minded believable parties who are willing to have productive debate for the purpose of finding the truth. This is the mindset Ray Dalio has fostered at his company.

He uses the term "idea meritocracy" to describe his company culture because it encourages thoughtful disagreements and weighs people's opinions in proportion to their credibility. He credits much of the success of Bridgewater to building this idea meritocracy culture.

As mentioned before, we need to overcome our ego barrier and blind spot barrier to be open-minded. And we need to be open-minded to effectively consider other people’s views.

Lesson 6: People Have Different and Objective Strengths and Weaknesses

Just as people have different physical traits, people also have different psychological traits. Since our brains are biologically different, we all experience reality in different ways, and any one way is actually distorted. By getting multiple perspectives, we get closer to truth. The better we know ourselves, the better we can recognize our blind spots and what we can or cannot change about ourselves. The better we know other people, the better we can predict their behavior and performance on certain tasks.

Discovering Your Strengths and Weaknesses

To better understand himself and others, Ray Dalio uses many psychometric assessments. The four main ones he uses are Myers-Brigg Type Indicator, The Workplace Personality Inventory, The Team Dimensions Profile, and Stratified Systems Theory.

For example, the Myers-Briggs Type Indicator looks at five different attribute spectrums:

  1. Introversion VS Extroversion: Whether people prefer to work quietly alone or talking in groups.

  2. Intuiting VS Sensing: Intuiting focuses on the big picture; Sensing focuses on details

  3. Thinking VS Feeling: Thinking people focus on logic; Feeling people focus on harmony

  4. Planning VS Perceiving: Planners like to make a plan and stick with it; Perceivers like to focus on the present and adapt to it. They often have trouble appreciating each other.

  5. Assertive VS Turbulent: Assertive people are more self-confident and resistant to stress. Turbulent people experience more emotional swings and are always striving to improve themselves.

(I've personally found great usefulness in Myers-Briggs, and I explain it in detail in this article.

The Team Dimensions Profile categorizes people into different archetypes:

  • Creators are good at generating ideas. They prefer unstructured and abstract activities.

  • Advancers communicate new ideas from others and carry them forward. They focus on harmony and enthusiasm.

  • Refiners focus on analysis and will challenge ideas and look for flaws.

  • Executors focus on the details and the bottom line. They make sure important things get done.

  • Flexors are a combination of all 4 types. They can adapt their styles to fit certain needs, but they may lack an independent view to go against others.

Of course, individuals are more complex than the archetypes that psychometric assessments put them into, and people often fit into more than one archetype. For example, Ray is a visionary, practical thinker, and executor. But the key idea here is that psychometric assessments are extremely useful for giving you a good understand of yourself in a world where most people don’t understand themselves much at all.

Dealing with Weaknesses

Only when you better understand yourself can you then channel your strengths and deal with your weaknesses. When we encounter weaknesses, we have four choices

  1. Deny them (which is what most people do)

  2. Work to improve them (which may or may not work depending on your ability to change and if the weakness is innate or not)

  3. Find ways around the weakness (like having someone else complement you)

  4. Change your goals to not need this skill that you’re weak at

The second choice is probably best if it works. You should try this path if that weakness is not an innate weakness but rather just something you have not yet learned or trained yourself in. The third choice is actually the easiest and often the most viable, yet it is the least chosen one.

Most people lack the courage to confront their weaknesses and make the hard choices that this process requires. Ultimately, it comes down to five decisions:

  1. Don’t confuse what you wish were true with what is really true

  2. Don’t worry about looking good. Worry instead about achieving your goals.

  3. Don’t overweight short-term consequences relative to long-term ones.

  4. Don’t let pain stand in the way of progress. Reflect on it to progress.

  5. Don’t blame bad outcomes on anyone but yourself. Fine-tune your plan or yourself.

Lesson 7: The 5-Step Process to Success

Ray Dalio has reflected that there are five steps to get what you what:

  1. Set clear goals

  2. Identify the problems that stand in your way

  3. Diagnose root causes to those problems

  4. Design plans to get around those problems

  5. Execute and push through to results

The steps loop because once you get the results you want, you'll naturally set your sights on the next goal.

A key point about the 5-Step Process is that the steps must be done one at a time. For example, when you set goals, just set goals. Don’t think about how you will achieve them or what you’ll do if something goes wrong.

Another key point about the 5-Step Process is not no one is strong at all five steps. That's why we need to find others with complementary strengths to help us.

Let’s go into further detail for each step.

Step 1: Set Clear Goals

While you can have almost anything you want, you can’t have everything. If you pursue too many things at once, you’ll be mediocre at all of them. You have to prioritize.

Step 2: Identify Problems that Stand in Your Way

Don’t be afraid of identifying problems. Problems are potential improvements just screaming at you to be discovered and then implemented. Although thinking about your problems might make you anxious, not thinking about them should make you even more anxious because they’re just forever lingering in the background of your life. Distinguish the big problems from small ones and invest in solving the big ones with the largest returns.

Step 3: Diagnose Problems to get at their Root Causes

Root causes are adjectives. Proximal causes are verbs.

For example, let’s say I missed the train. The proximal cause is a verb: I forgot to check the train. The root cause is an adjective: I am forgetful. Knowing what someone, including yourself, is like will tell you what you can expect from that person.

(This was a huge realization for me, which I talk more about in part 4 of this article)

"When a problem stems from your own lack of talent or skill, most people feel shame. Get over it. I cannot emphasize this enough: Acknowledging your weaknesses is not the same as surrendering to them. It's the first step toward overcoming them."

—Ray Dalio

Step 4: Design a Plan

Think of your problems as a set of outcomes produced by the machine of reality. Learn about the rules of the machine and then change your inputs to change the outcome. Remember that there are often many paths to achieving your goals; you only need to find one that works.

Step 5: Push Through to Completion

On pushing through to completion, we need to remember to connect the dots between our tasks and our goals. If we lose sight of the why, we’ll lose sight of our goals. Good work habits and discipline are crucial here. You should be tracking your progress and ideally reporting your progress to someone.

There are many successful people who aren’t good at execution. They succeed because they forge symbiotic relationships with highly reliable task-doers.

Find People with Complementary Strengths to Help You

Each step of the 5-Step Process requires different strengths. Most people might be good at 2 or 3 of the steps, but practically no one is good at all five.

We can assign each step to the type of person who would be good at it:

  1. Set goals – Visionary, good at high-level thinking and prioritization

  2. Look for problems – Detective, good at perceiving and synthesis

  3. Find root causes – Logical Analyzer, good at logic

  4. Design solutions – Creative Architect, good at practicality and visualization

  5. Execute and track progress – Reliable Task Master, good at self-disciple and achieving results

“Asking others who are strong in areas where you are weak to help you is a great skill that you should develop no matter what, as it will help you develop guardrails that will prevent you from doing what you shouldn't be doing."

—Ray Dalio

Lesson 8: Make Effective Decisions

To make effective decisions, we need to

  1. Overcome the ego and blind spot barriers

  2. Seek out credible and open-minded people

  3. Remember the 80/20 Rule

  4. Navigate levels of a decision

  5. Make decisions as expected-value calculations

  6. Use principles to systematize decisions

1: Overcome the Ego and Blind Spot Barriers

As mentioned earlier, we need to develop radical open-mindedness to overcome these two barriers. We can also train our conscious mind to recognize when our unconscious emotional mind is hijacking the brain and then respond consciously.

2: Seek out Credible and Open-Minded People

It's worth re-emphasizing the importance of only listening to credible people. Everyone has an opinion, and everyone is happy to share their opinion with you. Many people even share their opinion as if it were a fact. Don't mistake their opinions for facts.

To review, credible people are those who have repeatedly accomplished something and have great explanations for how.

"Some decisions you should make yourself and some you should delegate to someone more believable. Using self-knowledge to know which is the key to success—no matter what it is you are trying to do."

—Ray Dalio

3: Remember the 80/20 Rule

The 80/20 rule states that you get 80% of the value from 20% of the effort or information. Here are some examples (not from the book, but added here for context):

  • 80% of profits come from 20% of customers

  • 80% of results come from 20% of employees

  • 80% of your productivity come from 20% of your habits

Understanding the 80/20 rule helps you focus on what's important and saves you from wasting effort on unnecessary things.

4: Navigate Levels of a Decision

Reality exists at different levels and each level gives you a different perspective. When we look on Google Maps, we can zoom out to see a city. That's a high-level view. We can also zoom in to see a specific street or building. That's a low level view.

Similarly, when decisions also have a high and low level view. At the high level (big-picture level), we usually have our values and goals. At the low level (detail level), we have our day-to-day actions.

Let's look at an example.

Ray Dalio uses the terms above-the-line and below-the-line to establish which level a conversation is on. Above-the-line conversations address the high level goal, while below-the-line conversations address low level practical to-dos.

When discussing with others to make a decision, the conversation should focus on the main points and only go into details when necessary to explain a main point. Otherwise, it's easy for the people to get off-track. When mentioning details, always connect them to the high-level big picture, otherwise, people easily get confused.

All decisions across al levels should be consistent. For example, if your high level goal is to have a healthy life, your daily actions should be aligned to it.

5: Make Decisions as Expected-Value Calculations

We cannot predict the future with 100% certainty. Therefore, we should view every decision we make as a bet, with a probability and reward for being right, and a probability and penalty for being wrong.

To determine the expected value of a decision, we need to consider both the reward and the probability. For example, let's say the reward for being right is $100 and its probability is 60%, while the penalty for being wrong is also $100. What's the expected value?

Expected Value = $100*60% - $100*40% = 60 - 40 = $20.

A "winning" decision is one with a positive expected value (probability times reward is greater than probability times penalty). While we don't do these calculations explicitly, we are constantly making them intuitively. For example, you take an umbrella with you even if there's only a 40% chance to rain because the penalty for being wrong is high.

We can also see that sometimes, it might make sense to go for something with a low probability of success if the reward is extremely high and the penalty is low. Ray Dalio gives an example of asking if a house was for sale even though he was highly sure it wasn't. Turns out, the seller was willing to sell to him. As the common saying goes, "It never hurts to ask."

Some people tend to focus on the cons of everything and will resist doing anything with cons. That's an ineffective way to approach decisions.

"The best choices are the ones that have more pros and cons, not those that don't have any cons at all."

—Ray Dalio

6: Use Principles to Systematize Decisions

Ray Dalio explains that principles are a way of simplifying and improving decision making. The idea is that whatever situation you are facing is probably not unique. When you realize this, it massively reduces the number of decisions you have to make. You realize that almost all "cases at hand" are just another "one of those".

To use principles, you have to

  1. Slow down your thinking so you can note the criteria you are using to make your decision.

  2. Write the criteria down as a principle

  3. Assess your outcome

  4. Refine your principle for when the next similar situation arises

Here's an example (not from the book, but provided for context):

You have a conflict with your spouse, and you need to decide what to do next. If you don't know about principles, you might view every argument as a new situation, and you'd think about all the little details of that situation to decide if you should apologize or wait or do something else.

If you do know about principles, then you would make a decision, record the outcome, and decide what to do the next time you have a conflict with your spouse. Maybe the first time, you just waited for your spouse to apologize. You recorded the result: It was painful and unproductive and led to more unhappiness. Then the next time, you apologized and focused on harmony. That led to a good result. You record down harmony as a good principle to follow for solving conflicts.

Each time a new conflict arises, you can hone your principle. Maybe you add things like

  • Resolve negative emotions before addressing logic

  • Give praise before criticism

  • Criticize action not character

  • Give a specific recommendation about what action needs to change

Then, whenever a new conflict arises, you just go back to your list of principles for great relationships. It becomes much easier and faster for you to deal with conflicts, and you get better and better at it.


Q4: How have I applied this book in my life?

As mentioned in Question 3, I learned a lot from this book; 8 big ideas to be exact, and I’ve tried to apply them all to my life.

Implementing Lesson #1: Pain + Reflection = Progress.

I used to hate pain. I still dislike it. But I’m working on embracing it more when it does happen to me.

For example, I hate arguments. But when I was in one recently, I told myself, "Ok you're feeling emotional pain. That means something about your relationship can be improved. And you can use this event to improve your relationship. It's a chance for you to have better communication and understanding." To understand the other person better, I analyzed her using Myers-Brigg, and then I found out she is naturally very sensitive to criticism. Then I knew in the future to focus on what I want to see more of rather than what I don't want or like. If I didn't reflect on the pain, I may not have gotten that progress.

Implementing Lesson #2: Success = Meaningful Work + Meaningful Relationships.

I like how simple this definition of success is, and I’m sure I will refer back to this concept when I want to explain what success is to others.

My career goal used to be just make a lot of money in the corporate world. Now, I've changed to focus on contributing to making the world a better place, which is why I became a teacher, and also why I write blog articles. I also prioritize family and relationships more than career. These two things have definitely resulted in greater happiness for me.

Implementing Lesson #3: The Conscious and Subconscious Minds

There are three parts to this lesson:

  1. Overcoming amygdala hijacking

  2. Connecting to the subconscious

  3. Creating productive habits

During arguments and conflict, I realize I unconsciously start to frown and the corners of my mouth get tense. That's my amygdala at work, and I can consciously tell myself, "Remember, harmony comes first. People don't care about logic until they feel emotionally soothed." I'm still working on it, but I'm certainly improved compared to before I learned about amygdala hijacking.

A relatively new habit I've developed is meditation. My cue is I do it first thing in the morning. The key for me was to do it for a few hours; only then did I feel some actual benefits and peace (a reward). After that, I was willing to meditate daily for 30 minutes. I've also found that I indeed do get creative ideas and inspiration randomly when my mind is calm.

Implementing Lesson #4: Overcome the Two Barriers to Success

Viewing the ego barrier as a biological programming was very insightful because it explains why it’s so hard to control or defeat our ego. Same goes for the blind spot barrier. It was hard for me to see myself objectively, especially my weaknesses, until I decided to take the Myers-Brigg test (as recommended by the author) seriously and also to analyze people I knew using it. Then I noticed that objectively, I’m different from others and I have different strengths and weaknesses from others, and those differences are why I have certain types of conflicts with certain types of people. It’s not about good or bad or right or wrong; it’s about first understanding each other so that we can then fully appreciate and make use of each other’s differences.

Being radically open-minded is not a new idea to me since I previously learned from ancient Chinese philosophy that humility is the most important virtue. But it's very reassuring to hear the same advice from someone like Ray Dalio, who puts a very modern and business example to back up the claim.

I've also used some further resources to train myself to have open-minded discussions without making succumbing to the primitive brain:

While I'm still far from perfect, I've found that indeed I have improved with practice.

Implementing Lesson #5: Make Believability-Weighted Decisions

This lesson was a big one for me. I often go to my friends for advice, and they often have the same knowledge level or even less than me for my problem, so getting their advice actually wasn't helpful. I now realize that I need to ask people who are actually knowledgeable on the topic.

On a related point, my family members and friends will often just give their advice to me, sometimes stating opinions as if it were fact. I've now learned to only take the opinions of credible people seriously. This has reduced my stress and improved my decision-making ability.

Implementing Lesson #6: People Have Different Strengths and Weaknesses

This one is a fun one for me because I discovered that people really are categorize-able and predictable once you understand them well enough. The three tools I use right now are

  1. Myers-Briggs: This tells me A LOT about their personality, such as how they think, how they prefer to work, how and they act in social situations.

  2. Four Tendencies: This tells me how they respond to expectations, which is a huge part of relationships and life, and how to work harmoniously with them.

  3. Values: This tells me what's important to that person. When combined with their personality, I can predict their behavior.

I’ve made “baseball cards” (as the author calls them) for myself and others.

These cards are basically a high-level bullet points of the person’s values, tendency, Myers-Brigg profile, natural strengths, and natural weaknesses. I find that these baseball cards help me see people more objectively rather than see my projection of what I think they are or should be.

I can also predict people's performance on certain tasks and their behavior in certain situations. In the above example, I can predict that this person will thrive in a job that requires relationship-building skills, but he needs a good support person because he gets stressed easily. I can also predict that this person has fun hobbies and will probably suggest fun activities for us to do together.

In terms of overcoming weaknesses, the book mentioned we can either work on them ourselves or find others to help. One of my big ones is emotional intelligence. It's a very important ability that I can't really count on others to cover up for me, so I've put in the work to develop that ability. Another weakness is creativity, and this is actually one that I can ask for help from friends from, so I often call on my creative friends if I need help brainstorming.

Implementing Lesson #7: The 5-Step Process to Success.

I didn’t think the 5-Step Process was very helpful at first glance because it just seemed like an observation of life. But as I looked deeper into it, I realized how each step needs different abilities, and that was the big "Aha" moment for me.

I (and everyone) is only good at maybe 2 or 3 of the steps, and no one is good at all 5. That’s why we all need to find people who have complementary strengths. That was something I’ve never thought about doing before; I always felt like I can do everything myself, and while that might be true, it’s certainly not the most effective.

As mentioned previously, I've done the work to understand the strengths and weaknesses of myself and my close friends. I know that I’m personally strong at analyzing problems and executing, and I’m weak at visualizing possibilities and designing creative solutions. Fortunately, I have friends who are strong in those areas, so I will often call on them for help.

Implementing Lesson #8: Make Effective Decisions

For review, there are six aspects to making effective decisions:

  1. Overcome the ego and blind spot barriers

  2. Seek out credible and open-minded people

  3. Remember the 80/20 Rule

  4. Navigate levels of a decision

  5. Make decisions as expected-value calculations

  6. Use principles to systematize decisions

Earlier, I talked about practicing open-mindedness and making believability weighted decisions.

80/20 Rule

When it comes to the 80/20 Rule, I've learned to always look for the most important things to do rather than treating everything as equally important. For example, in my daily life, I've realized that 80% of my life's results come from 20% of my daily routines: study and meditation. Therefore, I will always complete those two activities, whereas the other 80% can vary day-to-day.

Levels of a Decisions

For navigating levels of a decisions, I find that this idea is very similar to the premise of the book Start with Why by Simon Sinek, which is to always start with the big idea and then connect the smaller details to it. Fortunately, this one comes pretty naturally to me as I’m always focused on why I’m doing something, and I make sure to do things that are aligned with my values or goals. I did find the terms “above-the-line” and “below-the-line” to be helpful when analyzing if a conversation is being productive or not. I now know that some people naturally lean towards talking above-the-line while others (including me) lean towards talking below-the-line, and I need always connect the dots.

Expected-Value Calculations

For making decisions as expected-value calculations, this was helpful for me to not look for options with zero downsides because such options don't exist. As Ray Dalio said, every option has pros and cons, but a good option has a positive expected value. That idea has helped me make tough decisions like doing a career change. And if things don't go as planned, then it's a cue to reflect and make progress.


Lastly, when it comes to using principles to make decisions, I've discovered one big principle: The root of everything is your character. Your character determines your thoughts, which determines your actions, which determine your results.

As Ray Dalio explained, root causes are adjectives. Proximal causes are verbs. If you missed the train, you might think the reason is because you forgot to check the time. But "forget" is a verb. That's a proximal cause. The root cause is that you are "forgetful".

Similarly, in relationships, if I have a conflict with someone, I used to always focus on the logic and the matters. Now, I know the root is my character: I need to be more caring and humble.

Or perhaps I messed up a task. I used to think about how I'd do the task differently next time. But that's not fixing the root. The root would be I need to become a more careful person.

I currently use a list of principles for interacting with people and activities in life from the book Guide to A Happy Life, which has improved my life greatly. Here are some examples of principles from that book:

  1. Respect: First treat your parents well because we owe the most gratitude to our parents. If you don't love and respect your parents, then it is impossible to truly love and respect anyone else.

  2. Carefulness: Do everything carefully, especially the small things. How you do anything is how you do everything.

  3. Carefulness: Enjoy virtuous influences (people, media, books, etc.) and avoid negative ones.

  4. Appropriateness: Don't be excessive when it comes to food (or anything else).

  5. Trustworthiness: Whatever I speak, trustworthiness comes first. We speak to benefit the other person, not because we feel like speaking.

  6. Humility: Be appreciative when hearing criticism and cautious when hearing praise.

  7. Humility: With free time, study good literature and improve your virtues.

  8. Love: Accumulate gratitude in your heart and throw away complaints.

  9. Love: Whatever abilities I have, I should not be selfish.

  10. Love: What is good for others, I will provide. What makes others unhappy, I will remove.

I've found that usually, whatever problem I encounter in life, I can find relevant principles from this book to solve it.


I am extremely grateful to Ray Dalio for sharing his wisdom in this book and setting a good example for us to learn from.

His lessons have helped me improve my productivity, decision-making ability, and relationships. I hope this summary article has been able to pass on some of those benefits to you as well.

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