This book, Diet of the Soul (영혼의 다이어트) is a diet workbook based on Eastern philosophy; Confucianism, Taoism, and Buddhism. The concept of Diet of the Soul (영혼의 다이어트): Yangsung Therapy (양성 치료) is nurturing the good nature of one person inherited from heaven, and the author believes the power to succeed in a diet is already in each one of us. Yangsung Therapy is not an attempt to become slim and happy because of how you think others feel about you. Rather it's an attempt to search for the beautiful parts of yourself that already exist in you.I hope this book might give you some comfort in your way to a better diet. I hope this book might guide you to a better diet just for you. However, this book is not for everyone who wants to just lose weight. More specifically, this book is for people who have tried various diet plans and have experienced horrible failures. It's an advanced course for finding your own diet. I don't mean 'advanced' as a successful diet, but a substitute for diets that have failed you constantly and lead you to more disappointments to your life in various ways. If you're not fed up with the word 'diet' you probably wouldn't need this book. If you haven't felt frustration toward yourself in the course of any kind of diet, this book might not be helpful to you. If you're looking for some new information about diets, this book wouldn't be of any help. Twenty-six years ago, I started helping diet patients when I was a resident in a traditional Korean medical hospital. It was then that I realized dieting is not just about eating right and proper exercise, but rather about someone's heart and mind. Although it's our own heart and mind we're dealing with, it seems like we don't even know what's in them and sometimes feel we don't have any control over them. But once you start to know the ways to understand your inner self, it will lead you to easier ways to be better with yourself and feel more comfortable with yourself as a result. I've been calling this course 'Diet of the Soul' because this course starts with looking into your heart and mind - your soul. I named this course 'Yangsung Therapy (양성치료)' in one of my theses. During this course, one girl realized that it is not a diet plan that she needs in her life so she stopped the course and went abroad to study. Some started to feel easy with their weight loss, some admitted that they have eating disorders and some had to quit the course because it was too painful for them to look into their heart and mind. Yes, the reason I wrote this book is to help some people to become more comfortable with themselves on their diet. When you choose to diet, it is my wish that you will be able to look into your soul and easily succeed with your diet. Regardless of the diet, the most important thing to choose is to be happy with yourself. This book was written from my heart, and includes all the pain, tears, laughter and determination of all the patients I have met. I feel gratitude, sorrow, happiness when I think of them, but most of all, I miss them. - Seung Choi (최승), K.M.D., LAc