The thought of changing careers is always scary. The feelings of uncertainty only increase when that change comes after age 50. However, a new study shows there may not be anything to fear. In fact, if you're willing to accept a pay cut, a job switch could pay great dividends in happiness. The study shows that amongst those who switched careers after age 50, 91% of people enjoyed their new jobs. Researchers attribute the increased happiness to a reduction of stress and greater workplace flexibility. A note of caution: the people surveyed did experience a drop in pay and many lost benefits or pensions. So finding a new job could improve your quality of life, just be sure you can afford to make the change.