This isn't really about social anxiety specifically, but it's how I try to approach all of my problems in general (and I have many).
Whenever bad stuff happens (which is all the time), or my anxiety is through the roof (which it always is), or I generally feel like everything is hopeless (which goes without saying), I try to remind myself: "This is quite the adventure! What an interesting experience I'm having!" Ime, this single thought is more effective than CBT, ACT, CFT, and a bunch of other therapies I've never even tried.
When the zombie hordes created by improbable interactions between Covid-19 and global warming [insert vague allusions to chaos/catastrophe theory] finally come banging on my door, moaning for human flesh, I'll be sure to remind myself "What an amazing adventure I'm having!" And then something equally improbable will happen and I won't die (yet again).
Is it just me or is it getting crazier out there.