Have we chosen our body? Our identity? Our disorder?
No, we didn't.
But one thing we can choose now, is that we accept our "foreign" self, that feels as if it doesn't belong to us, because it is the only thing that makes sense, we don't even have a choice, why are we trying to control what we can't? I believe one of the root causes of DPD is denying a part of who we are and attempting to control what is beyond our abilities. Examine your past taumas and connect to those parts and aspects of you that you hated, rejected, and hid, till you lost connection with a huge part of you.