The author went to his first high school reunion last year. He says it was an amazing opportunity to reengage with that part of yourself from a long time ago. "It just brought me to a lot of deep places, cognitively and emotionally," he says.
What does social media do to our self-esteem? How is envy affecting our politics? And should you go to your high school reunion?
Take the Seven Deadly Sins survey: freakonomics.com/nsq-sins/