I notice that I get very down on myself if I make a mistake or if I'm having difficulty learning something, and the failure really smarts. I've enlisted the help of friends- they check my writing samples, have conversations with me- and I get almost every single sentence that isn't simple (John kicks the ball. Sally eats pasta.) wrong, so I feel really badly for wasting their time and asking them to help me study. I'm almost at the point where I feel I shouldn't ask them for help anymore because it literally involves them fixing the entire attempt.
It's incredibly frustrating. I've never had this much trouble learning anything before!

Anyway, yeah: how do you deal with failure and difficulty?