Alan Zweibel, one of the original writers on Saturday Night Live, and legendary television producer Norman Lear join CBS News' Dr. Jon LaPook to discuss what they learned from setbacks in their own careers. Zweibel is out with a new memoir called "Laugh Lines: My Life Helping Funny People Be Funnier." He and Lear discuss the roll of comedy when dealing with difficult situations — and how this outlook can help people cope amid the coronavirus pandemic. Kate Lear, Norman's daughter (who also happens to be Dr. LaPook's wife), shares the philosophies her father adopted after his less successful moments in show business.