“Your brain is screaming for help right now.”
* You check your smartphone more than 100 times a day
* You have trouble sitting in one place for even 30 minutes
* For those of you who are tired of endless notifications and messages,
A neuroscientist's concentration recovery project!

"The concentration you've always dreamed of becomes a reality: A practical solution revealed by brain science."
★★★ Neuroscientist Kim Dae-sik
“It contains everything I’ve proven while coaching top-level professionals in the field!”
★★★ "Change Your Mentality to Change Your Life" by Park Se-ni

A bestselling author and neuroscientist with 2.5 million copies sold reveals
The Secret to Immersion and Solutions to Maximize Productivity

We live in an age where it is increasingly difficult to concentrate.
It's common to check your smartphone 100 times a day, lose focus to all the notifications, and interrupt your work to complete other tasks.
Shion Gabasawa, a neuroscientist and psychiatrist who studied the brain at the University of Illinois in the United States, discovered the fundamental cause of decreased concentration in the brain's biological rhythms and hormones.
Based on this discovery, he found a scientific solution and put it into practice himself, bringing about amazing changes.
Not only did their performance and income more than triple, but they also succeeded in building healthier interpersonal relationships.
This proves that anyone can dramatically improve their concentration simply by improving their lifestyle habits.

This book is full of practical solutions that will have immediate results, from improving your working memory to managing your schedule and reducing mistakes.
Among them, the best is 'Gabasawa Todoist'.
This system, designed by the author himself, is an innovative way to categorize work based on concentration, and the moment you use it, your productivity will explode.
Concentration determines everything.
The only difference between someone who achieves great things and someone who is always pressed for time is focus.
This book will take you to a new level of concentration and immersion.

According to brain science research, concentration is controlled by a specific brain region called the frontal lobe.
The frontal lobe is the front part of the brain and is responsible for higher-order thinking such as information processing, reasoning, and behavior control.
People who lack concentration often also have poorer other cognitive abilities.
The statement, “poor concentration but great creativity” is difficult to establish.
Because the frontal lobe is at the center of all these abilities.
--- From "Entering"

The key hormone that controls concentration is norepinephrine.
When noradrenaline is secreted, the heart rate increases, blood flow to the brain increases, and a state of arousal is created that allows for quick reactions.
On the other hand, if the secretion amount decreases, attention and concentration decrease, making mistakes more frequent and making it difficult to concentrate on work or study for a long time.
When brain fatigue builds up due to chronic stress, norepinephrine is not secreted properly, further reducing concentration.

What's the difference between attention and concentration? Attention is the ability to focus consciousness for a brief moment, say a second. Concentration, on the other hand, is the ability to sustain attention in these moments.
Just as one second is made up of 60 repetitions to make one minute, concentration is the result of a series of moments of attention.
Although there are differences in specific definitions, attention and concentration are usually considered similar concepts and treated together.
--- From "Part 1: The Secret of Immersion, the Most Powerful Moment Your Brain Experiences"

Working memory temporarily stores information that enters the brain and performs tasks such as thinking, calculating, and judging based on that information. The time it takes to process this information is very short, at most about 30 seconds.
It is to remember for a while, delete it immediately after processing the information, and then receive the next information and store it anew.
To use an analogy, working memory is RAM and long-term memory is hard disk drive (HDD).


While taking notes, your brain's concentration and memory improve, allowing you to hear the content accurately and remember it for a long time.
It may sound absurd to say that just taking notes can improve your concentration, but it is a fact proven by neuroscience.
This is because the act of writing stimulates the reticular activating system (RAS) in the brainstem.
The reticular activating system is the brain's command center that controls attention. When stimulated, it secretes hormones such as norepinephrine, serotonin, and acetylcholine throughout the cerebral cortex.
It also acts as a filter to distinguish between important and unimportant information among the numerous pieces of information the brain processes.
--- From "Part 2: Input Techniques for Accurately Remembering Only Important Things"

The human brain repeats a rhythm throughout the day, staying awake for about 90 minutes and resting for about 10 minutes.
This is called 'ultradian rhythm'.
It is called that to distinguish it from the circadian rhythm, which is maintained on a daily basis and is commonly called a biological rhythm.
When you are awake, your concentration and attention are high, so you make fewer mistakes, but when you are resting, the probability of making mistakes increases significantly.
Feeling drowsy while driving is also because you have entered a rest period.


If you look at the checklists that people often use, they are designed to randomly record ten or more tasks, but this method does not allow you to see the entire work at a glance.
If you have more than ten things to do in the morning, it's overwhelming and your brain doesn't have time to take in other information.
The key to my to-do list is to divide tasks into six categories and limit each item to three things.
Let's write down non-urgent matters in the spare time and other spaces.
Even if you just divide it into items like this, you can see the entire task at a glance.

--- From "Part 3: The Law of Output for Maximum Productivity Without Mistakes"

The ability to understand one's own mental state is called 'introspection' in psychological terms.
Introspection is simply expressed as self-insight, and since it is a more commonly used word in the public eye, the term self-insight will be used in this book.
However, while introspection largely refers to the ability to look back on one's 'heart' and 'spirit', self-insight refers to a broader ability to look back on not only one's heart and spirit, but also one's 'body condition'.
--- From "Part 4: The Power to Concentrate Without Getting Tired, Self-Insight"

The human autonomic nervous system is divided into the sympathetic and parasympathetic nerves.
During the day, the sympathetic nervous system is active and helps us work hard.
At night, the parasympathetic nervous system becomes active, helping the body and mind recover from the fatigue of the day.
The nerve cells in our body work by regulating speed like this, and during this transition process, the body needs time to gradually stabilize.
If you spend two hours relaxing and comfortable before going to bed, your sympathetic nervous system will naturally calm down and your parasympathetic nervous system will become active.
--- From "Part 5: Brain-tailored organizing method that leaves only what is necessary"

If you've read this book to the end, you'll understand the fundamental brain mechanisms that increase concentration.
If you practice the methods I've introduced step by step, you will be able to calmly resolve not only your work, but also your interpersonal relationships and even your personal problems.
If you use your brain a little differently, you can solve the problems right in front of you in new ways.

--- From "Going Out"