I had those same thoughts for the longest time. I thought that if I could just do....something I would get better. I grew frustrated and angry with doctors especially, but God too, that they didn't have the answers for me. Then, last summer I went to see a neuro and he had me get a MRI and an MRA of my head and neck and he really seemed to know what he was talking about. He told me that basically I could be like this for the rest of my life. He could give me meds, but I had to be careful taking them (they made me so nauseated I couldn't take them). He told me that there was nothing wrong with me that would hurt me more, if anything I might get slowly better.

Somehow, just knowing that I wasn't crazy and that it was ok for me to be feeling this awful made things easier. I still yell at God sometimes, but I have mostly come to accept this.
Yes, the old me is gone, that person will never be back. But a new me is here, though a person with some health issues. I have realized that this can actually make me into a better person if I choose to. I have become stronger in my ability to deal with adversity. I understand others' pain more easily and can better help them to deal with their pain. I have found new ways to have fun that I had not even thought of before, and have focused more on the important things in life.
Knowing that I am not going to die tomorrow and that if I don't make the best of this then it will best me; being determined to have a life (I was 19 when I first got a concussion and now I am almost 22), get married, have kids, have a job; wanting to keep my family and friends from worrying about me...All these are my motivations to get out of bed each morning, to smile, to work hard in college so that I can go on to graduate school and become an architect.

Yes, we might not ever recover, that old person who had no idea what pain and long suffering was is gone, but with work a new and better person can take that person's place.
God Bless,
Margarite