Profession choice
I always say go with whatever class seems really cool. Generic advice, I know. But frankly, I think a lot of people would be a lot happier if they stopped fussing over all the little details about combat strategy, intended roles, etc., and admit to themselves, “I really really like fireballs,” and thus decided to play Elementalist.
If you’ve ever seen a Profession and though to yourself, “that class just looks so awesome.” That’s the class for you. Play that class.