When you feel you are being so 'good', making all these sacrifices of everything that makes life enjoyable so that your symptoms will get better, and they aren't changing, that was the most depressing time for me as well.

As well as having the horribleness of PCS, you get this terrible feeling on top that it's all just so UNFAIR. I think there's something deep in most people's psyche that wants to see the world as an ordered place where good things come to people who do the right things, and this sort of unfairness really gets to us.

I found it helpful to consciously let go of this idea that things should be fair. I was making all those sacrifices because they were my only chance of getting better, not because they guaranteed that I would. There was nobody judging me for doing the right thing and rewarding me with improvement, it was just me, on my own, giving my body the best chance I could of recovery. It was definitely liberating to think that way.

I imagine this was easier for me as an athiest. For you perhaps looking at the story of Job or something like that, in that his sufferings were not 'fair' and he was not helped by God for some time, but ultimately it was all part of God's plan and turned out fine in the end. I'm sure it won't be the first time you've considered that story.

For me, I went through a period of inexplicably not getting better despite doing all the right things, it was as I say very depressing, and eventually I started to improve again. I would predict that the same will happen for you.