Very thorough read.
Something that really worked and works well for me to work through anxiety and depression is to write a ton about these emotions and trace them back to where they started. It only works if you are honest with yourself when you write and don't leave out details deliberately when you write or speak about it. So, yeah, speaking about or writing about my experience to myself helps a lot to stabilize when I am in anxiety or depression.
Thing I have realized with anxiety and depression is that it helps to define the experience for yourself. In detail. How exactly it feels. Where you feel it. And then you redefine your own relationship to anxiety and depression.
For example, an excerpt of what I did:
"When I start feeling anxiety I don't allow myself to immediately go into an acceptance and inferiority towards it. I don't see it as more powerful than me. I am able and powerful to work through the anxiety."
Then I would either breathe, write or speak about the experience. So, essentially I’d act on the statement above (not just speak it, lol). But always in a starting point that I am not accepting the anxiety to define and control me -- that I am doing something about it. That I am directing myself through the anxiety experience and period of it.
Give it a shot this way if you haven't. :)
And, thanks for sharing the writing. :)