For neurodivergent types like me: it helps to frame this more like a game with "points." All of the tips in this list are great, but it can be hard if you treat it more like "rules of order" more than "rules of the game." You can effectively systematize your approach to socialization (the only hard rule is to not be robotic about it—it's okay to laugh and play with people; that's a relatively uncommon experience).

I also make a point to make it 100% about them. Don't worry about being perceived the wrong way, saying the wrong thing, etc. That's part of being human. If you fuck up, you fuck up. Realizing that more or less removed any anxiety I had around talking to people (especially when I'd rather be behind a keyboard).

Edit: people are like spiders; they're more afraid of you than you are of them.