In regards to editing, rereading, and re-editing, I just received the review of Chapter 12 (of 44) of my book Hatchings from Feidb today. He is seeing things that I never would have and never have through 7, count 'em 7, drafts of this book - passive phrasings, POV violations, drone-on sentences, info-dumps, and a few other sundry items.
It's a perfect example of how, no matter how hard we try, we can become "snow blind" in regards to our own work and a perfect example of why it's necessary to have someone else beta-read the entire work, not just short pieces of it.
When Feidb is done, I anticipate I'll be able to sit down and correct the multitude of problems with this book that has prevented it from being accepted by agents in the past and he has my thanks for that.
All the problems aside, he does say that he's enjoying it regardless.