I read this book in the early 1980s, and implemented some of the astoundingly easy techniques outlined therein. Mr. Wilson incorporates progressive relaxation and self hypnosis with positive affirmation and autosuggestion. The end result is that the reader learns to clearly focus on his/her most important life goals, and then devotes some very powerful sleep and relaxing time to conditioning his/or her mind to move toward those goals. If you are an athelete, a performer, or just want to change or develop yourself in ANY way, Donald Wilson's book is A MUST.My copy of this book was stolen from the trunk of my car along with some other valuable posessions, and I am finally replacing it. The progressive relaxation scripts alone are worth the price of the book.