I didn't give up until I was 6 years out from my TBI. I kept attempting to improve, to become the person I was before. I had to breakup with who I used to be. She isn't going to come back. All I can do is be the best of this version of me. Six months is too soon to decide you won't get any better. A neurologist told me I would make the greatest amount of improvement in the first two years. I would set that as my mark, if I were you.

Good luck