From an article on “The Myth of the Midlife Crisis”:
In a 2008 study of 500,000 Americans and Europeans, economists Andrew Oswald of the U.K.’s University of Warwick and David Blanchflower of Dartmouth College say life satisfaction reaches a low point around the mid-40s, perhaps due to stress associated with the simultaneous demands of work and family. But it rises after that.
Prof. Lachman’s research indicates that life satisfaction increases significantly from the 40s to the 50s—and again from the 50s to the 60s—as children and careers mature and salaries reach peak levels. While midlife is often a time of stress, Prof. Wethington says, those between the ages of 40 and 60 also “have the resources and experience to manage more daily stress than younger people do.” Midlifers, she adds, are “champion copers.”