Earlier quoted context omitted.
There definitely are things you can do, but in my experience when you feel this way it is really hard to do them. I've been reading and listening to a few things that are helping me. One thing I've been learning about recently are the body's responses to chronic stress, such as the release of cortisol in the body, and the long term damage that can do. And about allostatic load, which helps explain how it gets perpetu…
Would you mind sharing sources? I'd be interested in reading what you found on those topics.
Also I've really enjoyed Heart Math. That book is where I learned about the physiological explanation of stress. And it has exercises that have helped me in moments of aniexty. Like waking up at 3am with worries and stress.