John C. Havens is the author of Hacking Happiness: Why Your Personal Data Counts and How Tracking it Can Save the World (Tarcher/Penguin, 2014). His work has appeared in Mashable, The Guardian, Slate, and Fast Company. He is the founder of the non-profit Happathon Project, which combines emerging technology and positive psychology to increase well-being. A former professional actor appearing in principal roles on Broadway, TV, and film, he is also a keynote speaker and consultant who has worked with clients like Gillette, P&G, HP, and Merck.