10. Help someone else
In a York University study participants were asked to behave helpfully or considerately toward another person for just a few minutes a day. After six months, participants reported much greater self-esteem and happiness than those in the control group.
Not only is doing good deeds sure to spike your happy meter, but more and more research proves there are physical benefits, too. Studies have found that people who make a habit of helping others report better health than those who don’t, and seniors who do volunteer work may actually live longer.