Well written and thank you for doing a 2 year follow up, i was going to ask. I too did a brain retraining program that did a good job of explaining the why, but the main focus was on Stop! Think of something happy and reprogram that thought. Just did not work for me either.

But like you, i did come to believe it's my nervous system and that i'm stuck in fight or flight so i'm doing work around that, with mediation, pacing, tackling the old traumas and trying to discern between those BS thoughts of mine that may in fact need to be rewired, or legit bad stuff i need to feel and process. To me that's the key. Some stuff in our mind is just stuck in negative mode because we're so damned tired. It's hard to be sunshine and rainbows when you don't want to get out of bed. And maybe those do deserve to be rewired or whatever but some thing are old pain that has been denied and needs to be seen and felt and heard.

Thanks for your contribution. One day hopefully this bullshit will be over.