That moment when you realize a "little tweak" you need to make to the MC which will probably make her better but will require some very focused editing to get it all just right? Ugh! I much prefer to be picking and choosing just. The. Right. Word. That's where I thought I was, but... With this one little "tweak" to her personality and she started talking to me! That's when I knew I had to insert this change through the whole book. Hopefully it pans out and doesn't mean I just wasted a whole lot of time doing the wrong kind of editing/rewrite.
Fight the fight!