All I can tell you is what I would try if I suddenly found myself in your position.
Before you tell me I can't possibly understand what you are going through let me tell you this: You are the first person I ever met who is able to fully appreciate what I went through for six months after my wife died. I was nonfunctional -- And I was non compliant -- I refused the medications the doctors insisted I needed. I fought my demons alone, unaided by anyone or anything, sometimes curled up in the corner crying, or quivering in fear.
BTW it is the strangest thing to be so frightened your body is quivering -- Yet to look around you and KNOW there is nothing there to be afraid of.
That was between 8 and 9 years ago. Now I am happily remarried with a wonderful family and most people would not believe I had been through such an episode.
So I don't fully understand your situation, but I am not totally ignorant of it either: We do have some common ground.
If I were to find myself in your position tomorrow and I looked back on these people who traumatized me and realized I had not one good memory of them, and not one memory where I won out against them --
Then I would invent memories that would give me back control of the situations. Then every time I had a flashback I would insist on reliving my fantasy until it was more real to me than the reality. I can't tell you what "memory" to replace reality with, as only you know what fits best with your personality and your image of who you want to become.
My personality is such I would fantasize how much fun I would have making them all look stupid while I laughed at them.
I would like to direct you to the first book my mother ever gave me as soon as I could read, and one I still consider the greatest book I have ever read:
As A Man Thinketh by James Allen
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