NPR's Andrew Limbong speaks with Catherine Price, author of The Power of Fun, about why it can be so difficult for adults to have fun and how people can find ways to incorporate fun into their life.

My sweetheart Marilyn and I were out hiking yesterday. Nothing major, just a quick jaunt to the top of a nearby hill and a stroll along the ridgetop. It was a gorgeous day, cool, overcast and breezy.

What’s better, hiking alone or with other people? “Depends how many bears are involved,” is one quip. Perhaps it depends on what kind of person you are. Hiking solo is a markedly different experience ...