Serenity,
I have chronic depersonalization, a dissociative disorder, and it has lasted since early 2009 - present day. It's like I am a robot, on autopilot, my head is blank, I can't remember much of anything, I am emotionally detached from everything in my life. There is a cloud over my brain, I sometimes don't feel like I am even me, and I do not know who I am.

I relate! Please do talk to your T about it, though in my experience... which is with MANY doctors, neurologists, therapists, etc... none of them really know what to do about it. At least in my neck of the woods. Good luck to you though & know that you are not alone!