Selena Gomez

One of the most important things for me is my hair. I've always been about my hair, and I love that my mom and my nana taught me how to take care of it myself. It goes through a lot every day, but I try to keep it healthy. I have to admit, it can get a little dead on the ends.

I'd say Harvard graduates leave here with a sense of the possible and the limit - and a sense that there are no limits to what humans can do and that you can always be pushing, whatever limit you think might be there.

I record my radio show, and my staff makes me a nice lunch in the kitchen, usually fish - whatever's freshest and line-caught - and a salad. I drink water and herbal tea, a blend of catnip, elderberry, and horehound.