I think everybody should have a hobby. Something that you can really throw yourself into. That you do just for fun, that makes you happy, that improves some aspect of yourself, and something you can commit to.
If you can’t think of one – create one. There are plenty of hobbies out there. Pick one.
Picking them is easy. Staying committed is hard. And even though hobbies are “Fun”, a degree of commitment is required if you ever plan to see some kind of result. Create a schedule in your week to really commit to your new hobby – a certain number of times a week, a couple of hours a day – it really is up to you. Learn all about your new hobby, both the theory and the application.