First disseminated during the Great Depression. The book has sold more than 15 million copies. Think and Grow Rich is a book authored by Napoleon Hill in 1937 and broadcasted as an individual development and self-improvement book. He declared to be motivated by a suggestion from a business tycoon and later-philanthropist Andrew Carnegie. It stays the biggest seller of Napoleon Hill's books. BusinessWeek magazine's Best-Seller List ranked it the sixth best-selling paperback business book 70 years after it was published. Think and Grow Rich is listed in John C. Maxwell's A Lifetime "Must Read" Books List.