While I so see some Thief in you, I'll definitely say Monk. To me, your answers just really scream Monk to me. Monks always seem to be impulsive, usually cheerful (but sometimes rather shy), and love to support and work in groups. They also tend to be a tad more extroverted and just generally have a good fighting/"don't give up!" spirit. So while I see some Thief and even some White Mage, you generally give me a Monk vibe more than anything~