When you feel the spear of regret, you have three possible responses. You can conclude that feeling is for ignoring—and bury or minimize it. That leads to delusion. You can conclude that feeling is for feeling—and wallow in it. That leads to despair. Or you can conclude that feeling is for thinking—and address it. What does this regret tell you? What instructions does it offer for making better decisions? For improving your performance? For deepening your sense of meaning?