Think and Grow Rich is one of the most popular books ever written. It is one of the best selling books of all time. It is one of the tremendously popular books self-help by Napoleon Hill. At the time of Hill's death in 1970, Think and Grow Rich had sold 20 million copies. Since then it has sold another 50 million copies. Real estate agents especially like and recommend Think and Grow Rich. Think and Grow Rich is a motivational personal development and self-help book by Napoleon Hill and inspired by a suggestion from Scottish-American businessman Andrew Carnegie. While the title implies that this book deals with how to get rich, the author explains that the philosophy taught in the book can be used to help people succeed in all lines of work and to do or be almost anything they want.