My inability to both talk to new people, and stop talking once I start. It's like I have to mentally burst through a brick wall, and then can't figure out how to stop.
It's tough to interact, I feel the same way with literally every person I meet.
Ask a question, ideally open ended, not yes or no.
"Hey this is my friend bigchungus"
You: hey, I'm a buddy of op from his gay porno days. How do you know op?
It incentives the other person to share a little about themselves. And then just be curious. They'll ask you plenty of questions but the reality is everyone else knows way more about the world combined than you do. Be open, share, but pause and see what their reaction is.
I find most of the people I connect with are people I think I may have nothing in common with but the more I ask them questions the more I realize we are similar and it's easier to open up to.
Also alcohol. Alcohol and drugs. But mainly the the first part.