Dan Ariely

Behavioral Economist; Professor at Duke University; Author; Founding Member of The Center for Advanced Hindsight

Susan Cain

Bestselling Author; Lecturer; Expert on Culture & The Power of Introverts

Gretchen Rubin

New York Times Best-Selling Author of "The Happiness Project;" Host of Podcast "Happier with Gretchen Rubin"

Gretchen Rubin - Knowing Yourself: Why You're Happy and You ...

Bert Jacobs

Co-Founder & Chief Executive Optimist of Life is Good