Just want to stop overthinking

I don't know what it is, but I'll go hang out with friends and I'll do something that isn't wrong necessarily, but I can't tell what people think about how I acted. I want them to think well of me and I hold myself to high standards. They are good friends of mine who wouldn't want me to overthink in this way. I just can't stop myself from replaying certain moments and trying to see what I should have done instead or try to figure out what they were thinking. These moments aren't even very impactful things. I'm sitting here now with a drink just to get my mind to quiet down so I'll be able to sleep. I would like to be able to think about the things I would like to think about instead of having my train of thought yanked onto a different track without my say so.