Adam Grant is an organizational psychologist at The Wharton School, where he has been the top-rated professor for seven straight years. His books have sold millions of copies, his TED talks have been viewed more than thirty-five million times, and he hosts the hit podcast Re:Thinking. His pioneering research has challenged widespread assumptions about motivation, success, character, and change, and his viral piece on languishing was the most-read New York Times article of 2021 and the most-saved article across platforms. He has been recognized as the world’s number-two most influential management thinker and one of Fortune’s 40 Under 40, and he has received distinguished scientific achievement awards from the American Psychological Association and the National Science Foundation. Grant received his B.A. from Harvard University and his Ph.D. from the University of Michigan, and he is a former Junior Olympic springboard diver and magician. He lives in Philadelphia with his wife, Allison Sweet Grant, a novelist and poet; their two cats (who don’t get along); and their three children (who mostly do). SHERYL SANDBERG is chief operating officer at Facebook and international best-selling author of Lean In: Women, Work, and the Will to Lead. Prior to Facebook, she was vice president of Global Online Sales and Operations at Google. She previously served as chief of staff for the United States Treasury Department and began her career as an economist with the World Bank. She received B.A. and M.B.A. degrees from Harvard University. Sandberg serves on the boards of Facebook, The Walt Disney Company, Survey Monkey, ONE, and Women for Women International, and chairs the board of LeanIn.Org.