Tomorrow is another day? I had a T teach me a very valuable lesson about how one day/act/situation is not a whole relationship. These people have seen you "good" too, happy, sad, etc. not just messing up? There's a whole relationship with each and whatever happened yesterday is just a tiny part of it making it more "interesting" :-)

I use to hate it the day after my T appointment because one of my bosses would approach me first thing the next morning all "careful" and ask how my therapy appointment had gone :-) or if I was "cranky" that day mention the therapy. It can be helpful to see how others view/relate to you. I sometimes shift my focus to that, what the other person is actually seeing (nevermind what I'm feeling or "know" to be true) or responding to. It can be a bit of a rest to look at it "scientifically" like you're just an observer or reading a novel/case history about another person, etc.