I'm sorry you're hurting so badly. Breathing techniques (deep diaphragmatic, alternate nostril, rhythmic, counted breaths, etc.), nature in all of its forms, primal screaming into my pillow - in the forest - or while driving in my car, dancing like a fool to some favorite music, and/or soaking in a hot epsom salt bath can often ground/center me then lift me when I feel my worst. I truly hope you can find a helpful healing groove that jives with you.
I know when I try to hold things in and not openly share them with the folks who can help me the most, it ends up being and feeling like a snowball rolling downhill that keeps getting bigger and bigger and eventually causes an avalanche of all I've already worked hard to do, and creates even more chaos/symptoms within.
Giving myself permission to put it out there so it can be recognized,nurtured, and processed with helpful trained assistance has proven to be more beneficial than not, if for nothing else, to free up some mind space to break the cycle of thoughts. Especially when I knew I was in the presence of a truly caring and competent care provider.
However, I don't find it easy to sit and talk about many things verbally, though, no matter how comfortable I am with someone, as I tend to often trip over my thoughts and words. The more critical it is, the more difficult it is to talk about. I have to write things down ahead of time and take a copy for me and the therapist, and take notes while we discuss, or else I end up wasting my time and hers by trying to recall all the important stuff while steadily getting distracted by the emotions each thought brings with it, or the countless other distractions that surround.
Thoughts of some substantial relief and lots of nurturing self-care vibes heading your way. Wishing you wellness and a whole lot of peace of mind..