Think and Grow Rich: The Practical Steps to Transforming Your Desires Into Riches is a 1937 motivational personal development and self-help book by Napoleon Hill and inspired by a suggestion from Scottish-American businessman Andrew Carnegie. The book was first published during the Great Depression. At the time of Hill's death in 1970, Think and Grow Rich had sold more than 20 million copies and by 2011 over 70 million copies had been sold worldwide. It remains the biggest seller of Napoleon Hil