Too many writers these days are taking the plunge without an editor. That is great if you know "it all" but I get the feeling most writers do not. I have downloaded many books off of twitter in the past month and deleted some, OK, more than some.
I may read about half way through a chapter and the grammar, the story wandering, turns me off. I am not vain, I do not expect the best possible writing, but I do expect a good book to lead me in and keep me there, not wander off away from the main reason that I opened the book in the first place.

I read one book recently and I wondered where the editor was, or if there was ever one. I found so many simple mistakes, such as on one page, there is an army of forty-eight people following, ready to strike, and than five pages later, before the battle there are now eighty-four. It's easy to make a simple mistake, we all do it. But, when the battle now begins with the original forty-eight It pulled me out because I had to stop and wonder, Is this a Writer's mistake who simply did not go back and review what he said, or it is someone (writer) thinking they cannot make a mistake and keeps on writing?

I went over and over my own book, Circles and still found silly mistakes. Lucky for me my editor has a sharp eye and skilled mind and catches what, my own reviews did not. I read my entire book several times and still did not see what he did, I did not find what he found.

Never assume as a writer that you can see your own mistakes. I have a wonderful writing group that catches a great deal, but not all of it. We are human. Editors look with a fresh eye, a mind that sees mistakes because he is not attached to the story as the writer is. attachment to our characters, our perfectly written scenes full of adjectives describing excessively too much, and our thinking it cannot possibly get better are a writer's flaws-of perhaps vanity-can be our undoing and we may never get another chance after one poorly written book. It is the first book that will give up a reputation good or bad. "THINK EDITOR." DO not think you are infallible or you may find out too late.