So the current young adult book has probably been revised fully 10 times, partially a couple dozen more. I got it to a point where I wasn't happy with it--when is anyone ever happy with it?--but where I knew that I no longer knew what to do with it.
This is when you're supposed to query, right?
Long, boring, recognizable-to-all-authors story short, I was ready to leave it on the back burner, at least for a little while, because I couldn't fix it alone.
Then I really and truly lucked out. I got COPIOUS notes on the manuscript from an agent, the kind of notes that make yet another revision feel worth it, since I have someone confirming my instincts about where it's going off the rails, and I was able to move it onto the front of the stove again (has anyone ever tried to extend this metaphor beyond the back burner before? It's a little awkward...).
Which brings me to:
REVISIONS ARE THE HARDEST THING EVER.