Tom Rath is one of the most influential authors of the last decade. He studies the role of human behaviour in health, business, and economics. Rath writes and speaks on a range of topics, from well-being to organizational leadership. He has written several international bestsellers, including the New York Times bestseller How Full Is Your Bucket? In 2007, The Economist listed his book StrengthsFinder 2. 0 as the top-selling business book worldwide. In total, Rath' s books have sold more than 5 million copies, been translated in languages and made over 25 appearances on the Wall Street Journal bestseller list. Rath is a senior scientist and advisor to Gallup, where he previously spent 3 years leading the organization' s work on employee engagement, strengths, and well-being. He has also served as vice chairman of the VHL cancer research organization.