Just wanted to weigh in on the "do you think you will recover?" discussion.

I sustained a concussion three years and three months ago. Recovery for me has been a long and arduous process (after some initial gains, I probably improved at around 1% per month - maybe a bit less than that).

I am mostly back to normal (and I still feel as if I'm gaining back that last 10% or so, now very gradually). I still have a couple of mild symptoms from time to time, and I'm still pacing myself somewhat and avoiding risky / high-exertion activities. But my life has completely turned around (working full-time, got engaged and married, starting a family, bought a house, feeling optimistic, etc.).

There were times early on when I did not know whether life would ever be livable again, but I did recover eventually.

For me, the cliché has been true: recovery is a marathon, not a sprint.