David Bryce, professor of strategy at Brigham Young University's Marriott School of Management and coauthor of the HBR article "Competing Against Free."

Pankaj Ghemawat, IESE Business School professor and author of "World 3.0: Global Prosperity and How to Achieve It."

Marc Freedman, founder and CEO of Civic Ventures and author of "The Big Shift: Navigating the New Stage Beyond Midlife."

Anthony Bourdain, celebrity chef and host of the Travel Channel's "Anthony Bourdain: No Reservations."

Bob Pozen, senior lecturer at Harvard Business School and author of the HBR article "Extreme Productivity."

Sherry Turkle, MIT professor and author of "Alone Together: Why We Expect More from Technology and Less from Each Other."

Jonah Keri, sports and stock market writer; author of "The Extra 2%."

Ricky Gervais, creator of the hit television series "The Office."

Ben Dattner, founder of Dattner Consulting and author of "The Blame Game."

Martin Seligman, director of the Positive Psychology Center at the University of Pennsylvania and author of the HBR article "Building Resilience."