Today’s Daf Yomi page, Shabbat 89, tells us a heartwarming story about Satan trying and failing to stump Moses, and extols the great leader's virtue. Tal Ben-Shahar, best-selling author, Columbia professor, and the brain behind the Happiness Studies Academy, joins to tell us why happiness matters, especially now that the national mood is grim. Why must a good leader be humble rather than charismatic? Listen and find out.