I injured my head in January and since then I have been on a quest to understand initially what happened, then what the damage was and then how to get better - still looking.

One of the things I constantly saw "was make sure you don't get a second injury!" Probably like a lot of people, I though how dumb to get another severe injury - what I didn't realise was that even a small impact or shake can set up back a long way. Even something as dull as bumping your head on a low ceiling can set up back.
One thing I have learnt is to take things slowly and not seek the magic cure