Monica Lewinsky stood on a stage in Vancouver, Canada, in 2015 delivering a TED Talk on the effects of public shaming. Breaking the ice with her audience, she told an anecdote about a young man who hit on her at a Forbes 30 Under 30 Summit. “You know what his unsuccessful pickup line was?” she offered. “He could make me feel 22 again.” The audience laughed: “I am probably the only person over 40 who does not want to be 22 again.” And why should she? At 46, after nearly two decades of living under the dark cloud of the Clinton scandal of the 1990s, Lewinsky has recreated herself as a writer, an anti-bullying advocate, and the owner of a bitingly funny Twitter account. She’s co-producing the third season of FX’s American Crime Story, which...