Insane. I'm getting there.
You know those people who are quite nice, but drive you insane? I had to spend some time with one of those today. She's well meaning, but very different from me in personality and outlook. Yet I have to see/work with her sometimes, so must be congenial. Thus, I usually do my best to NOT focus on the niggling annoyance I feel toward her. I think it would be worse if I put it all into clear words. Does that make any sense?