You seem so very light-hearted, but also incredibly difficult to classify. I would think this to be more of a case of which characteristics you don't share with other classes than which you do. Your answers to your personality flaws - especially that of impulsiveness and being noncommittal - make me lean toward either Thief or White Mage, but I think in the end I'd have to jump on the band-wagon and say you seem to be a White Mage. Describing yourself as a listener, mostly cheerful; you seem like you could find the good in anyone, even if it took a while to dig that deep.