Well, you can do many things...
but to make a living you probably have to focus in one thing and do all the rest of things in your leisure time.
Even Superman had to work as a journalist... (bad joke I know...).
Think Leonardo Da Vinci, that man made did virtually anything in a genius level.
Sometimes people say "I'm a songwriter" "I'm an expert in..." well... that's why are you paid but you are "A lover, an eater, a guy working in..., a thinker...".
Now I'm a poster of this forum.
But as long I don't get paid for that I've got "to be" something for 40 hours each week or so.