Some things I do so as to not interpret events like that negatively, so I don't use it personally against myself:

I say things to myself like "That is *his* experience -over there-, I am -over here-, some distance away, in my own experience."

"The person is doing whatever about what he *thinks* he sees, he doesn't know me at all, he doesn't see me truly."

"Don't sweat the small stuff."

"I'm not gonna let him rent room in my head, I have more important things to think about."

"I did not ask him to judge me, so his opinion isn't valid, isn't important. I have boundaries. Unless something really unsafe is going on, I move on, I return focus to what I am doing."

"Huh. He's probably had that done to him before, too bad we humans just are bastards to each other sometimes. Oh well. Sometimes we are not. Now, what was I gonna do?"

For me, yes, I do sometimes care, yes, I am human, things get to me sometimes. And yes, it is important to be able to read some cues, body language, to pay attention to what is going on around us. -And- there also is going to be a lot of nonsense at times that I gotta just wade through. It's like static, time to move on, change channels. Some things simply aren't that important and I get to choose what to focus on. If I overly focus on the jerk laughing at me, I'm letting him poison my day. He does not have the right to do that. And besides, I don't want to miss out on the sight of those beautiful tulips over there.