Take up a hobby that interests you. If you don't know what interests you, find out! Start small... Try learning to bake something simple, maybe take up a new form of exercise that doesn't feel like work and that you actually enjoy doing, for instance dancing of some kind.
Study about something you've always wanted to learn, like techniques of how to paint with watercolors, how to build your own tree house in the woods, why fireflies glow the way they do...
