Oliver Napoleon Hill was an American self-help author. He is known best for his book Think and Grow Rich (1937) which is among the 10 best selling self-help books of all time. Hill's works insisted that fervid expectations are essential to improving one's life. Most of his books were promoted as expounding principles to achieve "success". At the age of 17, Hill graduated from high school and went to Tazewell, Virginia to attend business school. In 1901, Hill accepted a job working for the lawyer Rufus A. Ayers, a coal magnate and former Virginia attorney general.
During 1937, Hill published the best-selling book Think and Grow Rich, which became Hill's best-known work. Hill's new wife Rosa Lee Beeland contributed substantially to the authoring and editing of Think and Grow Rich. Hill's biographers would later say this book sold 20 million copies over 50 years, although as Richard Lingeman remarks in his brief biography, "Alice Payne Hackett's '70 Years of Best Sellers' suggests the amount was considerably less."
Napoleon Hill died aged 87 on November 8, 1970.