Are ther any books that have had a profound impact on your life of the way you view the world?

The author was a professor named Kim Nan-do, and the title of the book was \'It hurts because it\'s youth.\' It is the title of the book atrracted my attention. I read this book when I was a high school student, and I suffered physically and mentally due to grades. Due to a lot of stress, I gained more 20 kilograms and got into the habit of binge eating. I gained a lot of weight, so my self-esteem decreased, and I was depressed, my personality became sensitive, so I fought with my mom every day. It was a book about self-development, but it helped me a lot to come across this book and control myself during my sick time. I was able to accept my sick time positively and I looked back on myself, so I could be comforted. Thanks to this book, I was able to overcome difficult times smoothly with comfort. I am still trying to overcome difficult things positively, thinking funny, \"Oh my gosh. Luckily, God thinks I\'m still youth.\"