I pretty much feel the same way as you do, I've only known since August but the circumstances which led to my discovering were so emotionally devastating that I already felt stripped clean of any identity, now I feel essentially like a blank slate, like some impostor was occupying my Id, ego and super-ego.
-The id is unconscious by definition, seeks pleasure.
-The ego separates out what is real. It helps us to organise our thoughts and make sense of them and the world around us.
-"The Super-ego can be thought of as a type of conscience that punishes misbehavior with feelings of guilt. For example: having extra-marital affairs".
http://en.wikipedia.org/wiki/Id,_ego_and_super-ego
http://simple.wikipedia.org/wiki/Id,_ego,_and_super-ego
Welcome to my crash course in psychology, okay so the id is the id, it just does what ever the hell it wants to do; it seems to me that our problems lay in the ego and super-ego. If our ego believes something which isn't real is real, like my premise that I was normal but unlucky, bad things just happened, it never occurred to me either that I was the problem. Things get even trickier with the super-ego because of the fact that we are not socially aware by nature, we do things which are socially unacceptable without being aware that we are socially unaware, mindblindness or what have you.
It seems pretty obvious to me that I am better off knowing then not knowing, in this case ignorance is not bliss, at least now I can be more aware of my behavior, I also understand why I react the way I do to certain situations, or that I have alexethymia and do not perceive my emotions the same way NT's do. So while my problems remain unchanged and largely unchangeable, I still have no clue what job to look for either for instance, at least there isn't some impostor who thinks that he's normal behind the curtain in the Emerald City. I have a little bit of hope that I can at least work with my strengths instead of wasting time agonizing over things I cannot change.
_________________
Autism Quotient - 44
Empathy Quotient - 8
Mind in the Eyes ? 18
Systemizing quotient - 52
Aspie-quiz ? AS: 151 NT: 61