I feel lethargic every day. The problem isn't my 'willpower' but my 'brain energy'!

I can't concentrate and I keep getting tired.
Even though I worked hard, the results were always the same.

Are you also enduring the day in a daze, as if your mind has shut off?

“My Brain is Just Tired” is a guide to ‘brain energy recovery’ for tired modern people.
Negative emotions easily arise even over trivial matters, and if you get swayed by those emotions, your energy is depleted and you end up losing your composure in both work and mind.
This book clearly and easily unravels the vicious cycle of everyday life through the lens of neuroscience, psychology, and organizational behavior, helping us understand why we constantly tire and collapse.
And above all, this book contains small, practical mental fitness strategies to get our tired brains back on.


This book is divided into three parts.


Part 1 delves into the structure of the brain to understand why we tire so easily, lose focus, and are easily swayed by emotions.
In fact, our brains still function the same way they did hundreds of thousands of years ago when they responded to threats to our survival.
So even in the modern work environment, the brain interprets even a small mistake, an email, or a casual glance from someone in a meeting as a threat.
At that moment, the brain puts down the 'thinking' mode and automatically switches to the 'emotion' mode, and instead of making rational decisions, it becomes overheated with negative emotions such as fear, anxiety, and avoidance, and easily breaks down.
Part 1 clearly and easily explains how the brain works, allowing us to look at why we repeatedly get tired and don't achieve the results we want from the perspective of 'acceptance' rather than 'self-blame.'

In Part 2, we introduce the 'Brain On!' method, which gradually turns the brain back on even in the midst of a listless daily life.
Even on a Monday morning when work is piling up, or during an afternoon meeting when emotions are tangled, we can quietly restore ourselves and re-center ourselves.
The author has met with various companies and people over the years and has selected only the brain training methods that have proven effective in the field and included them in this book.
From work habits that focus on your strengths to changing brain patterns that prevent emotional burnout, to small, simple routines that create both flow and recovery.
Nothing is difficult or grandiose.
The strength of this book is that it simplifies and optimizes meditation and breathing techniques to fit realistic work environments, making them practical to practice even while working.
In addition, Part 2 introduces various brain training methods that can be done at the office desk or even during a meeting.
This will give you the tools to build resilience and focus to protect yourself from the emotional obstacles and stresses you face every day.

Part 3 discusses how you, as a leader, can energize your team.
The author says:
In uncertain and tiring times like today, being a true leader means being someone who turns someone's brain on.
As such, the 'Brain On!' capability is now more important than any technology or strategy.
Leaders must learn and practice mental fitness before anyone else.
Only then can we pass on to our team members the habits of resilient thinking and emotions, and the energetic rhythm of the day.
Part 3 is a practical guide for leaders, reminding readers to become their own energy trainers.


This book is a 'brain user manual' that helps me understand and comfort my tired self.
Let's stop blaming myself for being so listless in my thoughts and emotions, and look at myself with warm eyes.
And from this moment on, let's try one of the small and easy brain training methods presented in this book.
Little by little, but surely, we will train our brains to become stronger and wiser, and along the way, we will also be able to find true happiness at home and at work.


Office workers who are tired of the daily fatigue,
Those who are easily swayed by trivial matters,
To you who can't concentrate and is enduring the day with a foggy mind
This book will be your warmest friend, quietly lighting a fire in your tired brain.

But the real problem is different.
The point is that the human brain has never been 'upgraded' even once since the beginning of time.
Unlike the apps installed on our phones, our brains have never been released to version 2.0, let alone version 28.0 or 999.0.
That is, the brains of our ancestors who roamed the earth hundreds of thousands of years ago still function in much the same way.

---From Chapter 1, “Why is it so hard to concentrate?”

We are already using our brains.
You just haven't trained your brain the right way to build new mental muscles.
The key is not to use your brain harder, but to use it smarter.
That means it's important to manage and regulate your brain so that when you head home from work, you don't feel completely drained, but rather recharged and ready to start the next day in the same positive mode as you did today.
---From "Chapter 3: Why Every Day is Tired and Exhausting"

To start your day with a success mindset, start by avoiding anything that puts you in work mode, like your phone or calendar, as soon as you open your eyes in the morning.
Because our brains need time to switch 'online' in a positive and energetic way.
Here are some ways to prepare for an energetic day:

---From Chapter 6, “How Can We Overcome the Obstacles We Face Every Day?”

What I find most helpful about mental fitness exercises is that they can be used to train the "muscles" of your brain even while you're at work.
Mental fitness exercises help me stay "brain on" and perform at my best during work hours.
Also, even when my brain feels like it's going 'offline', I can easily get back 'on' in just a few minutes with this exercise.

---From "Chapter 7 How to Restart a Stopped Brain"

Through this training course, readers will be able to grow from being a "good business leader" with some people skills to a "great human leader" with outstanding business capabilities.
And you will be able to transform from a 'one person' who asks employees to follow directions and follow instructions to a 'leader' who empowers many people and makes them want to follow you.

---From "Chapter 9: The Secret to Keeping Team Members' Brains in Energizer Mode"