On average, happiness declines as we approach middle age, bottoming out in our 40s but then picking back up as we head into retirement, according to a number of studies. This so-called U-shaped curve ...

Researchers observed an inverted U-shape, where middle-aged adults reported the highest level of happiness, or no significant age-related trend at all. Happiness over one’s lifetime has been popularly ...

The theory that your happiness levels are high in your 20s, decline as you head towards middle age, crash in your 40s and then climb back up as you get older is one you're likely familiar with. But ...