This book is reissued, with new format, new jacket, and a new preface, which indicates the applicability of the basic principles to today's challenge and the future. The first half presents his findings in the abstract -- his conclusions of the need of an open mind, of conscious control as the basis for reeducation and growth. He pricks many bubbles -- theory of the unconscious, modern educational methods, physical culture. In the second half of the book, he applies his theories to practice, illustrating with case histories, and analyzing his methods. Not a book for the casual reader, but for the psychologist, the student, for those who are working towards a new freedom.