Obsessing over teaching assistantship

This post, at Exposing OCD, was helpful. Even if I'm not sure which thoughts are obsessions and which are compulsions, I should start listing them so that I know what I have to fight. It feels good to realize that these thoughts are compulsions, as that means I can use exposure response prevention therapy to fight them.

I spend way too much time working as a teaching assistant. Grading 15 papers a week takes hours. Writing up solutions in Mathematica, carefully formatted, with detailed explanations, takes hours. I help students for  hours each week beyond the one office hour we as TAs are required to give. I have realized that I am taking too much time, but I can't force myself to stop. This is complicated by the fact that I feel strongly about quality education, and it's hard to separate the obsessions from my opinions. I am a harsh critic of ineffective teaching (although I rarely voice my opinion). I want to give my students clear explanations. But it's not practical. Naturally I'm just awkward and can't improvise, but I probably expect far too much of myself and other teachers in terms of how much preparation is necessary for a lecture, how fair and logical grading should be, how clear and explicit an explanation must be.

I'm here to get my own degree. I know too much handholding is not helpful for the students. But I remember struggling for hours on homework assignments simply because the problems were not worded clearly. I want to help people, so I spend my time clarifying. Back then, I should have gone straight to the professor with my questions when I got stuck on HW. Now, people should come to me (or the professor, really, as I should only have to contribute so much time) when they have trouble. And they do ask me for help. But I still obsess over the possibility that questions are going to be vague, and that those questions are going to make people struggle like I did. I need to face my problem, and so do they.