Think And Grow Rich by Napoleon Hill

From Amazon.com:

Think and Grow Rich! is the most widely acclaimed, influential book on success ever published. For a quarter-century, Napoleon Hill interviewed hundreds of successful men and women under the guidance of the richest man of his time, Andrew Carnegie. In this timeless classic, he reveals the secret to their great achievements—a powerful, proven formula that can empower you to achieve your own most cherished goals, too. If there is one must-have guide you need on the road to high achievement and success—to real riches in every aspect of your life—this is it.