There's that famous adage about the novelist never being able to finish a book, only abandon it to the public. Sometimes it's hard to know when you're really done writing and revising your book, story, or poem. You could easily tweak your manuscript forever, draft after draft, and still end up asking yourself every time, "is this version any better than the last?" It can be one of those things: the tighter you grip, the more it slips away. You lose perspective, and by then you've traveled so far from the original idea that you can't even tell if you want to keep walking down this road. If you've entered what Thomas Lee calls "The Black Hole of Revision," here are a few ways to tell whether your work is finished or not.