@Cfs2019...............I actually find it very interesting that the brief relief of mindset also gave you relief of physical symptoms even if it was a short period of time. This is very telling to me.
That makes sense to me. Feeling like we're not crazy is itself a relief. People often feel that with any diagnosis, too - I've talked to patients so relieved at a lyme diagnosis or CIRS or whatever. Then you talk to them weeks or months later, and they're optimistically pushing through some new treatment that hasn't relieved any of their real underlying physical issues.
As I mentioned above - the pseudoscience is explaining real phenomena. I do think our nervous system is stuck in fight or flight, but I don't think it's fixable with mental exercises. We can calm our thinking which doesn't then worsen the problem, but it also doesn't fix the problem.
Lots of things give me relief for an hour or two. I can pretty much do it at will - over many years I learned to live on adrenaline when necessary. Back in my mild days, I could 'turn it on' for a full day, but it always led to a crash. Three days of work in a row were undoable - I always 'came down with something'.
Now, I can jump on a 20 minute phone call with lots of energy, and I feel great for at least 15 of those minutes. It makes me feel slightly crazy, because I start thinking, "How could this make me crash if I feel this good?" Then I get off the phone and feel slightly crappy, then the next day awful, and the following day even worse. It happens 100% of the time now, yet I'm slightly surprised every time.