The book introduces the reader to the basics of personality psychology A. Adler . According to the author himself, "the purpose of the book is to show how the wrong line of behavior of one person brings disharmony to our social life, to teach people to recognize their mistakes and, finally, to show how to harmoniously adapt to the social environment." At the heart of Adler's approach is the belief that a person is capable of free choice and is really responsible for his actions - and, therefore, able to change his behavior. The book gives an idea of the practical system of understanding human nature, which formed the basis of numerous directions of modern psychotherapy.