Let the shaking happen. It will heal you. It wants to heal you. Thats why it happens. Read David Bercelis books about Trauma Releasing Excercises. Read Peter Levine.

It sounds kooky that an effective therapy for ptsd is to stretch out, lie on the floor and tremble, but it works. I only believed this weirdness because I remembered the trembling after childbirth. No one told me about it. I skipped lamaze, lol!. Read Bercelis book. You can do it alone. You can do it with a teacher or therapist.

I've found that marital arts training has helped a lot. I've never been a street fighting girl, but suburban family oriented no contact Sport karate with a little self defense has helped me a lot in life, far beyond the very few times ive put my hands on someone to make them behave.

Sensei told tr me cardiovascular conditioning prevents freeze response in emergency.

Check out Levine and Berceli for unthawing. You can do Bercelis exercises alone. Just read the book first.

Be well. And you dont sound like a coward to me.