This book describes good psychology and bad state of mind you must overcome if want to be happy , Conception is far-reaching, and reasons things out thoroughly .at the same time, the book also pointed out that when we are in trouble in the journey of life , what kind of mentality to be used to deal with it , to pull the cloud away . The philosophical story of the book is not only easy to understand, but also can help us to unlock the ideological shackles and the chains of mental ,Let us understand how to have a healthy mind in todays society, and maintain a positive and optimistic attitude, to create a happy life .