Why does the burst of happiness you get when your life improves rarely last—whether you start eating heirloom tomatoes, get a promotion, or marry your true love? The answer is "hedonic adaptation," the phenomenon in which you quickly get used to better circumstances. Recent research points to four strategies that can help keep you from habituating to happiness. —Laura Entis
GIVE IT UP
Going without your favorite food or activity for a few weeks will help you savor it more, finds a recent study in Social, Psychological, and Personality Science. "We have to revirginize ourselves," says Jordi Quoidbach, one of the study's authors. He recommends a temporary-deprivation strategy for reappreciating everything from chocolate to sex.
REVISIT YOUR LIFE WITHOUT
Because we tend to take things for granted, it's helpful to picture our lives without an improvement. In her book, The Myths of Happiness, Sonja Lyubomirsky advises going a step further: Try living as you did when you were a starving student or going without phoning your best friend. You'll appreciate your good fortune all the more.