La 4e de couverture indique : "This remarkable book by Dr. Joseph Murphy, one of the pioneering voices of affirmative-thinking, will unlock for you the truly staggering powers of your subconscious mind. Combining time-honoured spiritual wisdom with cutting edge scientific research, Dr Murphy explains how the subconscious mind influences every single thing that you do and how, by understanding it and learning to control its incredible force, you can improve the quality of your daily life."