Oh god, I can't even begin to imagine what that feels like. I'm glad you recovered, but that sounds horrible to have to go through.

If you want some inspiration or hope, look up Pat Martino. After a brain haemorrhage he had to have part of his brain removed, which apparently included crucial parts relating to musicianship. He was a virtuoso before, but completely forgot how to play guitar. This was at 36 years old, but he managed to re-learn guitar enough to be considered a virtuoso once again post-haemorrhage. I think I read brain scientists were stunned, science it should have been impossible. But the brain is a fascinating organ and apparently he managed to form new neural pathways using intact tissue.