I have one word for you: Neuroplasticity.
Right now, you're in shock. I know, I've been there.
However, try not to give up hope. The healing power and adaptability of the brain is amazing. Research is also showing that improvement continues for a lot longer than we used to think. I'm seven years out and I can do things now, I couldn't manage 18 months ago. Get all the therapy you can. It DOES help.
My prognosis was dismal. Am I back to normal, no. However, I'm a heck of a lot further than the neurologist ever thought I'd get.