A Dartmouth College professor has found that middle age is even more depressing than we thought. The good news? Things start looking up pretty quickly after that.

In a recently published study, David Blanchflower found unhappiness is a U-shaped curve, bottoming out when people are 47.2 years old. These results were consistent with residents in over 130 countries, regardless of their income or longevity.

But after hitting a low, people soon start feeling better. By the time they hit their 60’s, they’re as chipper as they were in their 20’s. Or maybe they just forget how miserable they are.

Investor happiness is another area of proposed study. Specifically, how do investors feel today about private credit, and has that changed over time? Certainly there are many excuses for that to happen.