I know this feeling , I used to overthink a lot before every social interaction but now I do less , I just jump into the situation and if I take long time to say the words I will deal with it and be like ( I won't meet this person again in my life and they're probably gonna forget about this interaction after 2 minutes ) . I don't how old are you but I'm 24 and I've been stuttering my whole life so if you want to talk more .