Your anxiety sounds very overwhelming. I can imagine how unsettling, stressful and debilitating it feels...it must be frightening to feel that way.
Sorry, I admittedly don’t struggle with something similar. But I know that there are many people on the forums who struggle with anxiety that comes out as various physical symptoms. So I feel many people would be able to empathise...
I don’t know if you have seen it already, but there is a beyondblue thread called self helps tip for managing anxiety. It is full of tips/suggestions to help manage anxiety (exactly as suggested by the title). If you’re interested, I think the easiest way is probably to type the thread title in the search bar.
You might be able to draw inspiration from that thread. I know it’s a little long, so if it’s a bit much, maybe read it in multiple sittings. Alternatively, maybe you could try to skim read the first and last pages for an overview. Just some gentle suggestions.
Kind and caring thoughts,