Not unless you have worked through the obsessing in the first place; if not about T not responding quickly enough to suit you in this instance then it will be about something else. I'd stay and fix the obsessing.

It's not comfortable but it's an opportunity. If you aren't obsessing, what are you doing? I always had trouble figuring out what I would be like if I didn't have the symptoms and difficulties I did; what would I be doing, how would I relate to others, etc. It does not happen overnight.