Having an assessment about things

I seem to have hit a wall.  Goodness  knows that I have faced walls before.  I have done a lot of things that seemed impossible and looked to me like I would never be able to do them.  I understand the value of persistence, calm action in the face of wanting to run screaming down the street, wanting to cry and quit.
I am considering if I have come upon a place that is permanently broken. If it is, I will simply have to build bridges around it,or if I have accidentally overloaded myself and if I temporarily back off and try to proceed more slowly I can get through.
the vision therapy is working on the more intense parts of convergence.  About an hour after I finish one of the new exercises I find myself in a state of fight or flight rage and sorrow that lasts, well it lasts a long time.
I know that in part it is being exacerbated by what is becoming increasingly clear  is positional PTSD.  My present class seat is making this a whole lot worse.  I did not know that I should not be sitting where I have to turn my head to the right and constantly refocus my eyes while turning between the front and the computer screen.
I know that now.
Up to the last week I have been spending my time too freaked out to climb out of my tree and cope with my life.  I finally took enough time to just, sit, long enough to be able to focus on homework and get some things done.
I don't know what to do.  I don't like quitting when I can see the benefits of proceeding. At the same time I can't have another semester like this, it takes too much out of me.
I also hate the trauma that broke me, and left me with these problems and I will not let it or the perpetrators win.  If I give up do they win?  If I let myself be broken while I see a way of repairing the broken parts do they win?  If I am not strong enough to do this, do they win?
Am I backing down or backing away to get a run up?  Am I leaving the object I can not move, or going out to find a lever?  I think I may be shifting into a lower gear for the steeper grade.  If I don't bomb through it all at top speed and it still gets done, it is still done.  Whose timetable am I working on anyway?
Mine. Really. If I do it slower and from lower down it will still happen.  I may be facing a wall but I am not stuck in a situation I can not escape, and my distress is not permanent.
screw normal. I can only be me as well as I can.