Hear you. It's a horrible feeling when the thought run away from you. somethings help me:
I ask myself what I can do about what worries me RIGHT NOW. If there isn't anything, cross off the list. If there is, do it and let it go
I ask myself if the worry is coming from an actual source outside, or is it a "ghost", coming from me and whatever illness I have. If it is a ghost, the worry goes off the list.
I remind myself that a thought is just a thought. Because I worry that soemthing might happen does not mean it will, and until it does, it doesn't exist. A though looks real because we attach feelings to it and get worked up.¨
If I try to banish thoughts from my mind, I just fing that they cat harder to get rid of. Let them come, but let them go, don't try to hold on to it. It's like,"OH, huh, there goes that one again. Hmmm."
Just little tricks. When I get down, I get kind of whacky and very, very uneasy about everything. The unease is from my body and how it can't screen out things that should stress me and stuff it shouldn't worry about. It expresses itself as anxiety. Nasty stuff. Take care of yourself and I hope it lets up soon. LEt us know how it goes.