If you were choosing today, would you choose fruit or chocolate for next week? Why is it so hard to stick with our plans to eat well, save more, pay off our debts, take our medication, and exercise? Why do we join health clubs that we rarely visit? Why is there a persistent gap between our good intentions and our actions? How can we design social institutions that empower our good intentions, enabling us to resist the lure of instant gratification? These are the questions that Harvard behavioral economist David Laibson tackles to help us understand our own economic behavior. The answers are enlightening and they have generated scalable, powerful behavioral interventions that are changing the world. Speakers: David Laibson