I love oatmeal. To me, it's not boring. I agree that ordinary oatmeal is very boring, but not the steel-cut Irish kind - the kind that pops in your mouth when you bite into it in little glorious bursts like a sort of gummy champagne.
Begin challenging your assumptions. Your assumptions are the windows on the world. Scrub them off every once in awhile or the light won't come in.
I don't really worry about the size of the part much any more. It's nice to have more time to work on the character, and to have big scenes to play. But if there's something playable there, and if it's interesting to do, then that's nice.
I'm greedy for that satisfaction of doing something hard and knowing that, even though I was afraid I couldn't do it, that somehow I can deliver.