Edward M. (NED) Hallowell, M.D., is an instructor at Harvard Medical School and the director of The Hallowell Center for Cognitive and Emotional Health in Sudbury, Massachusetts, an outpatient treatment for emotional and learning problems. He is the author of the bestsellers, Connect: 12 Vital Ties That Open Your Heart, Lengthen Your Life, and Deepen Your Soul; and Worry: Controlling It Using It Wisely; and coauthor of the bestseller, Driven to Distraction. For more information on Dr. Hallowell, visit his Web site at DrHallowell.com.