(((dps)))
I can relate. I don't like these feelings overwhelming me either.

No fun, nor is it comfortable in any way.
I can tell you what I am doing to make it through these dark times: journaling my experiences a bit ~ the trigger and the emotions and thoughts brought up. From there, every time it pops up in my mind, I push it away. Try to think about something else. My comfort comes from nature, so I think of trees and grass blowing in a gentle breeze. I imagine being in that place as much as possible whenever I am overcome by my intense emotions.
I'm anxious to discuss what I've written in therapy, but I have to wait. So, I'm pushing it away as much as possible. Don't know if that's the technique one should aim for in these times, but that's what I've got. Gentle hugs to you