something else I swear by, is the following:

" if you think it's going to happen, let it happen."

I don't know about anyone else- but I find myself more anxious trying to stop something that I know is eventually going to happen

example: I have chronic pain, and I'm walking along somewhere- and it feels like my body is going to lock on me.

I'd rather let it lock then I would sit down, then If I sit, I'm worrying about... well, later I'm going to pay for it because I didn't let it happen- and later it's going to be worse

or another example: someone wants to shout at me for something I've done

they are going to shout at me no matter if it's now, or if it's later- so it may as well be now.

but that helps me. may not be everyone's choice