ანოტაცია: Napoleon Hill wrote this book in 1938, just after publication of his all-time bestseller, Think and Grow Rich . This powerful tale has never been published, considered too controversial by his family and friends. Using his legendary ability to get to the root of human potential, Napoleon Hill digs deep to identify the greatest obstacles we face in reaching personal fear, procrastination, anger, and jealousy, as tools of the Devil.