One if the riddles of my existence is the fact that I judge other people based on my own judgments of myself.
Sometimes when I'm with a friend, and I'm having fun, I would be perfectly happy to hang out with them all day. But when I think about how they are feeling, I assume that they are totally sick of being around me, that they want me to leave them alone, and that I am being a total nuisance.
I then spiral into a black and self-hating hole, where I assume that since my friend, as I assumed, doesn't want me around, then I am a horrible person, and therefore the world hates me and therefore I should also hate me, and if the world hates me, then my friend does too, and therefore I am an even worse person for inflicting myself on them, so then I hate myself even more.
And this happens even when I know the person really well.
I try not to let myself go into that sad little spiral, but sometimes, no matter how careful I am, I still slip up and fall in.
It's not fun.