I’ve been chronically socially anxious for most of my adult life, struggled to really break out of a shell and only had inner confidence amongst people who engaged with me initially. and trust me, the hardest part will always be the first step, because you’re almost programmed to think of those branching paths of “what if this happens?”
My main advice is to let those paths exist, but immediately throw them away, even the ones that look positive. because your brain will always take these ideas you come up with in your head and try to twist them, make you poke holes in them until they seem unappealing, or even worse, make them feel like they could end in disaster. the more you dwell on uncertainty, the more you’ll forget why you wanted to do something in the first place.
and my other bit of advice is, if you feel it, lock it in. if you want something to happen, say you will do it, and just keep it there. don’t even think about what it could lead to, just say “I want to do x, so I will do x”. from there, nothing can hurt you, you can’t hurt yourself, and even if it goes kaput, you can say “I did x.”
finally, maybe a slightly dumber bit of advice, is pick a song to listen to before doing something you would normally back out of, like it’s a hypeman. mine is “champagne coast” by blood orange, mainly because it makes me feel like a Main Character
wishing for the best!