10. Do unto others. Practicing acts of kindness has been shown to enhance well-being. When Lyubomirsky and her colleagues conducted an experiment in which individuals were asked to perform five considerate acts on a particular weekday—like donating blood or feeding a friend's pet—the study participants reported higher levels of pleasure than members of a control group who did no such acts. "These little acts give you a sense of purpose beyond money that you've earned," says Kashdan. And generosity doesn't have to be a one-way street: Neighbors can find ways to connect by trading favors. A psychologist, for example, can offer some counseling in exchange for handyman work around the house. "These acts of kindness are occurring all the time and remind us that we live in a benevolent society," Kashdan adds. "We saw it happen after 9/11, and we're seeing it again with the economic crisis."