Words are inadequate

Honestly, 22k is a huge accomplishment - most people don't ever write even that much on one piece. So is realizing you can write 1000 words a day, which from what I gather is considered fairly "normal" for a typical professional writer (and would get you a full novel in about 3 months, which fits Stephen King's "a novel shouldn't take more than a season" thing).

I'm having the same Nano-related issues as you. I manged to hit the halfway mark on time, but then I had (expensive) car trouble and the story just started feel really... shitty. Which everyone says is the point, but still. However. I always think about that stuff I write, and when I look back at it later I realize it's not so shitty after all. You'd probably have a similiar experience - it seems to be fairly endemic among writers.

I really do think the whole point of Nano is to stretch yourself as a writer, and from what I've read here it sounds like you've done that, definitely. So you've already "won" in ways that matter, and everything else is just (as they say) gravy.