This introductory book by Charles Baudouin covers the psychological subjects of suggestion and autosuggestion in supreme depth. A subject of great interest to Baudouin, Suggestion is shown to compose of a variety of techniques, used in a variety of settings clinical and non-clinical. Baudouin's belief was that suggestion, used responsibly and correctly, could be of great therapeutic benefit to patients suffering from a variety of mental disorders and even physical diseases. Furthermore, Boudouin was of the opinion that patients could be encouraged to suggest beneficent notions to themselves. Such autosuggestion forms the second half of the book, wherein Boudouin examines ways in which a patient can authoritatively and reliably influence his subconsciousness with autosuggestion, to the enrichment and benefit of his or her life circumstances, outlook, and attainments.