I constantly analyze people's faces to see if I'm doing something wrong

Ever since I was young I've known that gut-wrenching feeling of that meme with the people holding red solo cups all staring at me. I have gotten so good at reading body language, I can instantly tell if someone is bored or weirded out by me and I'll look for an exit out of the conversation. I can't relax or get close to anyone because I can't turn off my vigilence searching for clues that I'm failing. As a result all of my conversations stick to a script and I keep it focused on the other person. If they ask me questions I try to redirect it back to them. Which I'm sure sounds like I'm interrogating them but I can't handle the alternative. How can I stop overanalyzing people's reactions when it's served me so well? I feel like I'm always treading water socially.