This new edition will include a CD and a new letter to Claudia 20 years later. This book compiles the writings that Jorge Bucay dedicated to his patients for over three years of therapeutic work. With time, the patients themselves began to share and to distribute these letters, until, one day, due to the success that they were having, they suggested that Bucay publish them. In this imaginary correspondence, Claudia, the author's very loved friend, is the recipient of a revealing letter that will clear many of her doubts about self-knowledge, love, the beauty of life and the secrets of psychology. The book has already become a self-help classic.