I didn't feel like reading all the posts but I did your your OP. I can tell you this from my own experience- that ignoring something I felt in my heart came to agitate my pains or even create them. Especially migraines for me. Writing it, drawing it, praying about it, meditating, music, a lot of things help me to cope. I am planning on getting a prayer bell. Anything symbolic really helps to materialize the idea or frustration so that you can do something with it. Burn it, bury it, alleviate, put it into "god's hands" and out of yours if you are religious.
I find that meditation is useful- and this may be a "out there" theory but I think it helps me because it exercises different areas of the brain- and when you have PTSD our CNS (central nervous system) brain is switched on (our primal reflex brain, triggering adrenals and such). I find the more I meditate the more self aware I become, and the more I can control my primal urges.
Most of all, remember that an idle mind is a dangerous mind. Keep yourself busy if possible.