Think and Grow Rich is the motivational personal development and self-help classic of all time. While the title implies that this book deals only with how to get rich, the author explains that the philosophy taught in the book is the key to help people succeed in all lines of work and to do or be almost anything they want. The book was first published in 1937 during the Great Depression. At the time of Hill's death in 1970, Think and Grow Rich had sold 20 million copies. It remains a perennial best-seller after more than 70 years (BusinessWeek Magazine's Best-Seller List ranked Think and Grow Rich as the sixth best-selling paperback business book 70 years after it was first published). Think and Grow Rich is listed in John C. Maxwell's A Lifetime "Must Read" Books List.