intrusive thoughts

Anyone experience this? Like you get thoughts of failing or not recovering etc? which I think makes things worst. Is being positive a better outcome?

Greetings all... hope this finds you well. So, I've had a stress disorder for about 9 years. (Every symptom in the book.) Mostly panic/anxiety related but lots of physical issues. As some may recall, I'm a few months into a spell of balance/dizzy issues. (Strong, daily and constant.) I have...