I've been working on revisions to The Book of Blue Daggers. Getting to the editing part of a novel is always thrilling, but daunting in that everything you make feels like an improvement, but it is obvious that there is no end point. Unlike a first draft where you're just trying to get done, finished, completed, the 2+ drafts can take an endless amount of time. 

There's a point where the story is completed, but how do you know that it cannot be told in no more efficient or exciting way?