Preface - Life is enriched when you subtract rather than add.

Chapter 1.
Don't bother me by worrying about what other people think.

Are there differences between "wanting" and "liking"? | Acting thoughtlessly only leads to bad habits? | Answering rude questions is a waste of time? | Enjoying the process will lead to results? | A rigid mind is easily broken? | Failure is not the end, but the beginning.

Chapter 2.
Don't waste your life on meaningless relationships.

Do small actions create precious relationships? | Forget grudges quickly and remember kindness for a long time? | If you want to clear up a misunderstanding, take a step back? | If you want to be treated well, treat others first? | Delete unnecessary contact information immediately? | All relationships require a safe distance.

Chapter 3.
Don't sweat over things that haven't happened.

Do your worries disappear just by breathing properly? | Do you think that trying to do well actually ruins things? | Start quickly and progress slowly? | If you try to do everything at once, you'll end up with nothing? | Don't misunderstand and get angry alone? | If something can't be helped, leave it alone and it will be resolved.

Chapter 4.
Don't put off today's happiness until tomorrow.

Are the obvious things the most precious? | Regret breeds frustration, while reflection breeds hope? | To go far, you must rest while you go? | The first person you should consider is yourself? | Do the things you don't want to do first. | Life becomes easier when you create a manual.

Chapter 5.
Don't fill your life with things you should throw away.

Is life too short to live only happily? | If you want to fill it, you must first let go? | If you want to organize your life, start by organizing your room? | The busier you are, the more you need to take care of yourself first? | The things I keep close to me shape me? | The size of my confidence determines the size of my future.

Just by shifting your focus, negative emotions disappear!

Why is life so difficult and exhausting? Why are positive emotions fleeting, while negative ones follow one after another? The author, a health psychologist who studies stress in the body and mind, explains the secrets through fascinating experimental examples from various psychologists.
It's not just you, it's just how the human heart is.


People are sensitive to negative emotions.
Once you feel depressed, you tend to keep ruminating on it, even bringing up past mistakes and regretting them.
This is a natural survival instinct inherited from primitive humans.
This is because being sensitive to negative information allows you to detect danger more quickly and escape dangerous situations more quickly, which increases your chances of survival.

However, modern people do not need to be as sensitive to negative information as primitive people.
The wild beasts that roamed the area have disappeared, and we are well prepared for sudden heavy rains and landslides.
However, if negative emotions still occur, the author says to shift the focus of your thoughts from 'me' to 'the event'.
If you keep thinking about bad 'events' in relation to 'me', you will start to feel self-reproach, regret, and resentment towards 'me'.
However, no matter how bad the 'incident' is, if you focus on the 'incident' itself, you will start to think about solutions.
Depending on where you focus your thoughts, negative emotions can either become a fuse that torments you or a fuel that helps you overcome failure and grow.

The anger lasts only 90 seconds!

Between people, love and happiness sprout, but also discontent and resentment.
The same applies between parents and children, lovers, and friends.
At such times we say:
“Oh really, why are you like that?” The very words we habitually blurt out hold the key to resolving the cause of negative feelings toward others and the problem.
The fundamental reason we feel disappointed in someone and suffer from anger toward someone is not because they did something bad, but because we cannot understand their actions.

The author advises that most problems in human relationships can be solved through 'asking questions'.
The important thing is not to ask questions to the ‘other person’, but to ask questions to ‘myself’.
Instead of asking, “Why is that person like that?” you should ask, “Why am I angry?”
Simply changing the subject of the question naturally shifts the target of negative emotions from the person to the situation.
Then, you can look at the problem more objectively, and the burning anger will subside and you will become calm.

According to psychological research, anger lasts only 90 seconds.
Depending on the questions you ask during these 90 seconds, your relationship can either be strengthened or ruined.
Let's build a dam with this book to keep us from being swept away by our emotions.

Difficult tasks become easier when broken down into smaller ones!

What's your most frequent thought during the day? Is it "I'm tired," "I want to go home," or "I don't want to do this?" If so, you're in "lethargic mode."
But the interesting thing is that it's not that you're really lethargic and you're moaning, it's that your brain goes into lethargic mode because you're moaning.

The reason you keep sounding lethargic is because you're trying to do too many things at once.
The bigger the goal you set, the farther the distance between your current state and the goal becomes, and the more the vague anxiety of, "What if I can't do it?" arises.
To forget that anxiety, we avoid it by saying, “I want to give up,” or “I don’t want to do it,” which ultimately leads to helplessness.
It's not that I really don't want to do it, I just turn my head away for fear of failing.
In other words, helplessness is only a temporary illusion.

The author introduces a secret method to shake off this lethargy.
It's about breaking down the actions that lead to a big goal into smaller ones.
You can't go 10 meters with just one step.
But if you think of it as going 10 meters in ten steps, it becomes easier, and if you increase it to twenty steps, it becomes even easier.
Let's give up on trying to do big things all at once and focus on the small things right in front of us.
With the 30 psychological laws contained in this book, you will be able to take a small but powerful step toward a better life.