Or if you want, you can be like me and play every class a bit. But then I'm insane (and somehow still in the top 50, sometimes top 30, if anyone counts rank as important, which I don't). I basically just play a class I feel like until I get tired of it and then I switch. Above all, I make sure I"m having fun. If not, I say "eh" and go play Fallout for a week or something.
Everything in moderation, my good Hoopy! (And I was serious before, I think you're awesome and don't want you to go D: )