"The joy of growing old with energy and cheerfulness." "Now I've decided to live cheerfully."
Professor Lee Ho-seon and Director Kim Sa-rang, Korea's leading mentors, share their tips for aging healthily and joyfully, both physically and mentally.

Health is a basic condition for living a happy life.
And as the age of centenarians approaches, interest in and consumption of 'healthy living' among middle-aged and older people are increasing.
At this time, a 'healthy life' does not simply mean a state of being free of disease, but rather means maintaining a state of physical and mental harmony and living a pleasant and enjoyable life.
The two authors realized the importance of living a healthy life with a cheerful mind and wrote this book to provide essential life advice to middle-aged and older people.
Professor Ho-seon Lee, who has been thinking about old age while working as the director of the Korea Senior Counseling Center and has been communicating with middle-aged and older people through lectures for middle-aged and older people and running the YouTube channel [Lee Ho-seon's As You Get Older], provides advice on positive anger, self-esteem, dopamine fasting, and other things to help you feel more cheerful and joyful than you do now, based on his experience and life know-how.
Director Kim Sa-rang received training at the Department of Family Medicine at Seoul National University Hospital, worked as a family medicine specialist at a hospital specializing in cancer patients, and appeared on numerous TV programs to share health information. Based on this experience, she has included health information and practices for healthy aging.
Through this one book, readers can learn how to age happily while maintaining a healthy body and mind.

Healthy lifestyle habits and positive mental habits are essential not just for living a long life, but for a high quality of life.
What matters is not how long you live, but how you live.
Whether the jar of life called 'I' will become a space for storage and maturation or a space for neglect and decay is determined by the habits we choose.
--- p.4 From the "Prologue"

As we get older, we need to find inspiration in our own lives, not in those of others.
You have to be excited without worrying about what others think.
I hope that as time goes by, you will meet and examine your true self and see how beautiful your existence is.
I hope that from today onwards, a breeze will blow through your lives.
I wish you the winds of balance, health, joy, and new life.
--- p.8 From "Prologue"

As we get older, we find ourselves looking for underwear that is more comfortable in size and shape.
My preference for clean cotton underwear over floral mesh underwear is probably the fruit of my life experience that simple, hygienic, neat, and practical choices are the best.
Rather than giving up on style, you pursue something that is both stylish and comfortable.
--- p.37 From “Clean cotton underwear, not floral mesh”

As we live, we form countless relationships, and through them, we sometimes become closer and sometimes grow distant.
Managing distance is important to maintaining positive relationships with people for the long term.
For a healthy relationship, it's best to keep physical distance from people who make you feel uncomfortable.
Moreover, if the relationship is not good, if you think, 'I shouldn't think about this person,' you will only think about that person.
In times like these, it's good to keep a physical distance and get away for a while.
--- p.54 From “The Art of Tireless Human Relationships”

Although there are many different types of kimchi, the most commonly eaten type, cabbage kimchi, is high in sodium and increases the intake of rice and carbohydrates.
It goes without saying that various soups and stews made with kimchi are not only high in sodium but also a major culprit in increasing carbohydrate intake.
--- p.78 From “Why did you stop eating meat while eating kimchi?”

If you are always angry, it is a disease.
But anyone can get angry at some point in life.
If you say you don't get angry, you're not human.
Anger is often considered a negative emotion, but when expressed effectively, it can help us navigate life.
But did you know that there are many different types of anger? If we define "anger" as a sudden outburst of anger, there are as many as ten different types.
--- p.90 From “Positive anger is a psychological thigh muscle”

Although anger is generally perceived as a negative emotion, when expressed and managed appropriately, it can contribute to achieving personal goals, improving relationships, or solving problems.
The good thing about positive anger is that it fuels problem-solving.
It's an emotion that arises when a situation feels unfair or wrong, but it can be a powerful motivator to recognize the problem and work to resolve it.
--- p.90 From “Positive anger is a psychological thigh muscle”

Are you worried about how you'll spend your long leisure time? So, you need to practice enjoying yourself on your own.
Of course, whether young or old, humans need to be able to play well by themselves and with others.
But learning how to play alone becomes more important as you get older.
Why? As we age, the number of people surrounding us decreases.
Now, even if you want to play together, the other person is either busy, sick, or dead.
--- pp.150-151 From "People who know how to play have fun alone"

Can there be a "standard diet that works for everyone"? There are so many different diets out there.
There are many different diets out there, including low-carb, high-fat diets, intermittent fasting, a diet where you only drink protein shakes for a few days, and a diet where you only eat chicken breast and brown rice.
To be healthy, you need to find a diet that suits you among the many diets available and practice it.
A diet that doesn't suit you can actually make you lose your health, even if you're trying to be healthy.
Just as one man may be the best husband to one person and the worst to another, diet can be good or bad for one's health.

--- pp.163-164 From “Don’t be fooled by the trap called standards”

If we all know that we are free and that we deserve to be welcomed, we can begin to act as healers, even while bearing the scars of the wounds we have endured throughout our lives.
Just thinking about it makes your heart swell. Even a tone-deaf person can sing, and a beat-deaf person can keep time.
In a place where everyone is happy, even those who are tone-deaf or beat-deaf can join in the cheering and dance at the party.
Even if I have to dance, I have to dance my own dance.
I hope you escape the hell of gaze and discover that you have your own unique style, even if it is simple.

--- p.199 From “Even if you dance a dance, dance your own dance”