Linda Mautz talks about the concept of autosuggestion, which one necessary quality that successful people throughout many years have kept a secret. Napoleon Hill has arguably influenced the success of more men and women than any other author. He was commissioned by Andrew Carnegie to study hundreds of vastly wealthy people to discover their secrets. Autosuggestion is basically self-suggestion. Emile Coue de Châtaigneraie (February 26, 1857 â July 2, 1926) was a French psychologist and pharmacist who introduced a method of psychotherapy and auto suggestion