Bogged down by the blues? Repeated studies show that volunteer work can decrease depression and anxiety and increase a person’s feelings of joy. “For extra enjoyment, try to match volunteer work to your personality," suggests Dr. Domar. "If you love kids, hunt for some items for toy drives. If you’re a foodie, serve some time at a local food kitchen.” Why it works: “It’s tough to feel sorry for yourself over relatively minor issues when you encounter people in more severe circumstances.” In other words, being reminded of everything you have can help you get a grip when the gloom sets in.