Learned optimism : how to change your mind and your life
Martin E. P. Seligman, Author
| [S.l.] : Vintage Books
Known as the father of the new science of positive psychology, Martin E.P. Seligman draws on more than twenty years of clinical research to demonstrate how optimism enchances the quality of life, and how anyone can learn to practice it.
The celestine prophecy : an adventure
James Redfield, Author
| [S.l.] : Bantam Books