Harvard Professor, Researcher & Positive Psychology Expert; Author of "The Happiness Advantage" and "Big Potential"
Shawn Achor on happiness as a competitive advantage
Physician & Clown; Founder of Gesundheit Institute; Inspiration for the Robin William's Movie "Patch Adams"
Award-Winning Medical Journalist
Relationship, Healthcare & Communication Expert
ABC News Correspondent, Anchor of "Nightline" & Co-Anchor of "Good Morning America"
Educator, Psychotherapist, Author & Humorist
Olympic Gold Medalist, Health Advocate & Cancer Survivor