Not entirely sure why, but my brain continues to have "hard" days -- a measure of brain fatigue. For those of you without TBI, think of brain fatigue as being a bit similar (for clearly different reasons) to spending a hungover morning with a crying baby while trying to cook, do finances, and work all at the same time. That's how my brain feels without any of those things.
So I embrace the gift of a day or ?? recovering from who knows what, write what I can, and know that the trails will be there when my brain has recovered. There is, somehow, gift in everything.