A number of cartoonists frequent this board, so I thought I'd post it here.
How much of your personality, or how much of your character is based upon the fact that you're a cartoonist? In other words, how much of <i>you</i> would be taken away if you weren't a cartoonist.
If you want to broaden it, you can say how much of yourself is based on the fact that you're an artist.