Nothing will make you feel 10 years younger quicker than playing in the park with an ice-cream-fueled 5-year-old. As I wrote previously, young kids can also teach us a surprising amount about getting the most from life after 60. If you don’t have young kids in your family, why not consider volunteering at a local youth center or becoming a mentor? Giving back has been shown to make you happier and it may just keep you feeling younger too!