Nostalgia and reminiscing stimulate those feel-good emotions because they make your brain remember how happy you were when you first did the things you’re remembering. Think back to something you really loved doing as a kid. Roller skating? Playing at the beach? Eating ice cream at the ice cream parlor? Visiting a relative’s house? Whatever it is, find a way to do it again. Sure, the experience will be slightly different now that you are a bit older and time has passed, but the joy you’ll get by reliving your favorite memories will be the same. When kids do fun things, they aren’t embarrassed or shy or intimidated—they simply experience the richness of life. Go be a kid again! You’ll reignite the joy that came from having those experiences.