I love what I do. I love my students. Every single one of them. Especially the ones who challenge me as a teacher. Because that's what they do; they challenge me. They don't make me hate my job or think that I can't do it (although I may have had moments of self doubt). They challenge me and make me a better teacher. And for that, I am grateful.
For example, "I've noticed that you got very upset when you were trying to write. What's up?"
S: "Yes. By the time I think about what I want to write about, you ring the bell."