While becoming unemployed can be a huge mental health challenge, many of us assume that retirement—which also involves stopping or at least reducing work—will be the opposite. It’s pictured as a well-deserved time of leisure and relaxation, when we’ll get to do all the things we always wished we had time for. But is retirement as blissful as it might seem? A paper published this year reviewed 15 other reviews of past retirement research to provide the “most updated and comprehensive...