A teacher is someone who has taken their mind much further than you have. They've gone into the void further. They've seen the luminous realities. No one has seen them all. . . but they've seen more than you have and they understand the trap of self-reflection.
The thing is that the money issue looms so large in art now. And it has absolutely nothing to do with art. If you're painting goes for ten grand or a hundred grand, it doesn't make painting any easier. And it doesn't make the painting any better if it goes for a hundred grand.