Many young adults are suffering from the pressures setting up a career and family. They experience life as a series of never-ending challenges. But here’s the good news: The older you become, the better it gets. Researchers contacted 1,546 people ages 21 to 99 via random telephone calls and found that older age was associated with higher levels of overall satisfaction, happiness and well-being, and lower levels of anxiety, depression, and stress. The older the person, the study found, the better his or her mental health tended to be.