Teachers are sort of faced with a thankless task, because no matter how good they are, unless they find a way to personally rationalize the rewards of their effort, nobody else is really going to do it for them en masse.
With acting, I've got a character to inhabit. You've got to think about your intentions and your directions. In modeling, even though there's an act to it, a good model is a good model. For me it's uncomfortable territory. You start to feel quite insecure about yourself. There's nothing between you