I really recommend you that you should read this book once a life.I think this book is a part of srimadh bhagvat gita because it's the other Japanese book like Geeta. This book is the solution of many problems that we face in our entire life . Those who read and understand the purpose of the book or purpose of life. It's amazing book for his/her. This book teaches how to face life problems, how to survive a happy life.
