The Magic of Thinking BigBy: David J Schwartz Get ready to improve your life with the inspiring, multimillion copy selling self help book. Your go to guide to a better life, starting with the way you think. In his classic self help guide, The Magic of Thinking Big, bestselling motivational speaker and personal development expert Dr David Schwartz invites you to change your life to work better, earn better, manage better, love better and live better. To think big and live big.