★ Bestseller for 43 consecutive weeks
★ YouTube lectures have surpassed 36 million cumulative views.

“The power to change myself and the world is not an indomitable will,
“It comes from the mental strength to not be afraid of failure.”

Professor Kim Joo-hwan guides you through the latest brain science and meditation in “Resilience”
How to Be Completely Free from All Fear

★ Choi Jae-cheon, Kwon Oh-hyun, Chae Jeong-ho, Kim Bong-jin, Kim Dae-sik, Kim Mi-kyung, Jang Dong-seon, Choi Jae-boong
Highly recommended by 8 of Korea's top academic and business leaders!

The mind also has muscles.
Just like physical strength, mental strength also becomes stronger through systematic and repeated training.
Professor Kim Joo-hwan, who has been focusing even more deeply on mental strength research since publishing the best-selling book "Resilience," has revealed the most effective way to develop mental strength through his new book "Inner Communication."
'Inner communication' is the foundation of mental strength, and the best way to achieve proper inner communication is meditation.
To prove the effectiveness of 'inner communication meditation,' he conducted joint research with leading domestic neuroscientists and psychiatrists, and personally verified the results of the research in the field.


Currently, he lectures on inner communication meditation to psychiatrists, and also imparts meditation training to leaders and meditation instructors from all walks of life.
The author's meditation lecture, released to the public for the first time in November 2022 after years of writing, has amassed over 36 million views on YouTube in just over a year, transforming countless lives.
This is why you can trust the theory of inner communication and mental strength training method presented in this book.


Professor Choi Jae-cheon, who read the book before its publication, defined the author's meditation as "a comprehensive meditation based on cutting-edge brain science and physics."
It is not the religious and mystical meditation that is commonly thought of, but rather a meditation proven by the latest data and modern science.


This book, which entered the comprehensive bestseller list immediately after its publication, has been praised by numerous readers, such as “A must-read to live a healthy life,” “Worth reading at least three times,” and “A book like a light of the times,” and has been a bestseller for 43 consecutive weeks. It guides us, the digital humans, who have become more mentally weaker than ever, to a healthy and happy life.
The special edition, published to commemorate the book's 100,000th copy sales, includes a meditation training journal written by the author himself as an appendix.
If you practice consistently for 12 weeks, 10 minutes a day, you will experience changes in yourself, a different view of the world, and a change in your life.

The modern human brain reacts in the same way as a primitive man would when confronted with a wild boar when facing important moments in life, such as the college entrance exam, job interview, or project presentation.
To do well on a test or interview, you need to activate the prefrontal cortex to improve logical thinking and problem-solving skills. However, instead, the amygdala is activated, which tenses the body's muscles, increases the heart rate, makes you feel fear and dread, and reduces concentration and problem-solving skills.
We, who must live in modern society with such a primitive brain, must understand and control the basic workings of the brain to develop the ability to adapt to the environment.
This is the core goal of mental strength training.

---From "Modern People Living with a Primitive Brain" on page 38

The fact that we can improve non-cognitive abilities and achievement capabilities through mental strength training means that we can develop our own fundamental capabilities and, furthermore, proactively change our own environments.
That is, it instills the possibility that one can change the world by changing oneself.
This is a very new perspective in education.
Future education must teach that to change the world, we must first actively change ourselves, and that such change is possible.

---From “The Importance of Education for Strengthening Mental Strength” on page 61

Over the past decade, I've been conducting mental strength training for students, athletes, office workers, professionals, leaders, and executives, and I've realized one thing.
The fact is that even if you train your mental strength in the same way, the effects vary greatly from person to person.
There are many reasons for this, but the biggest reason is the difference in each person's perception of how much they can change.
The most powerful factor hindering the effectiveness of mental strength training is the fixed belief that one's ability to change is limited.
'I am originally this and that kind of person.
The fixed idea that 'it is difficult for me to change' is the biggest enemy of mental strength training.
---From "We must break free from the illusion of genetic determinism" on page 113

Changing myself means changing my habitual, automatic way of talking.
It means learning a new way of internal communication and making it a habit.
If the way and content of communication with me changes, the person I am will change.
Let me emphasize again that I am a lump of my memories, and those memories are a collection of episodic memories.
And the essence of episodic memory is my own storytelling about my experiences.
To be more precise, we only remember as 'experiences' what we can turn into 'stories' and save.
In this sense, the essence of all experiences and memories that make up 'me' is story.
So, if I change the way and content of the stories I constantly create within myself, I can change myself.

---Page 169, “Background Self and Inner Communication”

During the formation of the child's self, the loving voice that the caregiver continuously gives becomes the source of the child's self-worth.
The voice of love and care is interwoven into the child's self-consciousness as an internal order.
Children develop a habit of storytelling that says, "I am definitely valuable because I see someone caring for me and loving me like this."
This becomes the basis of the child's 'sense of self-worth'.
When the feeling of 'I am precious' becomes deeply ingrained in the child's self-consciousness, the child will have a foundation for developing strong mental strength.

---Page 357, “The Importance of Inner Communication in Brain Development”

Mental strength training is the process of repeatedly engaging in appropriate inner communication to steadily form the self you desire.
The intentional inner communication at this time is inner self-talk.
Depending on how I think about myself in my daily life, that is, depending on what kind of stories I tell myself over and over again, I can actually change who I am.
(…) Since the very existence of ‘I’ is a kind of storytelling, if I change the inner communication I have with myself, I myself will change.
What I say to myself honestly has an immediate and absolute impact.
If you truly think to yourself, "Ah! I'm strong," then you actually become strong.
Conversely, if a person says to himself, "Oh! I'm sure I'm in pain right now," he will actually feel pain.
---From "Pages 369-370, 〈Specific Cases on the Power of Inner Communication: Placebo, Hypnosis, Zen Questions and Answers〉"

The reason why neuroscientists have recently begun to pay great attention to the effects of meditation and have begun to produce numerous studies is because traditional meditation practices have systematically and well developed training elements for stabilizing the amygdala and activating the prefrontal cortex.
From a religious perspective, various meditation practices are intended to practice specific religious experiences or teachings.
However, from a neuroscientific perspective, meditation practice is a very effective training method with neuroscientific basis for strengthening mental strength.
---From "Inner Communication Meditation as Mental Strength Training" on page 381

Some people complain that they become anxious and have difficulty meditating afterward.
For people with anxiety disorders such as panic disorder or traumatic stress symptoms, simply sitting calmly and focusing on their breathing can be very difficult.
Being able to quietly look into your inner self for a while means you are already quite mentally healthy.
People with emotional dysregulation problems try to sit still and meditate.
When you do that, many negative thoughts tend to come to mind first.
Some people believe that meditation is supposed to give them some special experience.
These prejudices make meditation more difficult and challenging.
---From "Emotional Control through Movement Meditation" on page 513

There are many ways to cultivate positive inner communication with yourself and others, but some that have proven particularly effective include forgiveness, compassion, love, acceptance, gratitude, and respect.
These are all core themes of traditional meditation practice, and at the same time, teachings of saints that have been passed down for thousands of years.
They are also the research topics of the latest brain science.
Numerous neuroscience studies have reported positive effects: forgiveness, compassion, love, acceptance, gratitude, and respect activate the prefrontal cortex, increase happiness, enhance cognitive function, and strengthen the immune system.

---From page 583, “Six Positive Inner Communication Meditations: Forgiveness, Compassion, Love, Acceptance, Gratitude, Respect”

Our daily lives are always filled with noise.
The noisiest of them all is my mind.
The mind, which is the experiencing self, is constantly chattering.
It is the nature of the experiencing self to tell all kinds of stories.
An experienced self is essential to living everyday life in harmony with others.
However, if you leave everything to the experiencing self, pain, anxiety, and anger will inevitably come.
Obsession arises from the illusion that my mind, which is my experiencing self, is my real self, and fear arises from this obsession.

---From "What is Meditation Practice?" on page 630

One of the most effective ways to stabilize the amygdala through the body is through breathing.
This is because among the autonomic nervous system functions, the only one we can intentionally intervene in is breathing.
We cannot intentionally intervene in functions such as heartbeat or internal organ movement that are controlled by the autonomic nervous system.
We cannot force our heart rate to slow down to a constant rate or stop our internal organs from working for a while just because we want to.
However, while breathing is governed by the autonomic nervous system, it also allows for intentional intervention.
Breathing is the only thing.
Breathing is the only way to reach the deep unconscious within us.
This is why breathing has such a powerful ability to stabilize the amygdala and calm all kinds of negative emotions, such as anxiety and anger.

---From "Page 673, 〈Breathing Meditation Tradition: Anapanasati〉"