I've just completed revising the manuscript for my novel, Bill Warrington's Last Chance, based on line-by-line edits suggested by my peerless editor, Liz Van Hoose of Viking/Penguin.
During the process, Liz kept telling me how much she "loved" the work I'd done.
See all the pretty green on the page to the left? That's an actual page from the manuscript, with Liz's line edits. My manuscript is 300 pages. This is one of the reasons I haven't posted for two weeks.
Fortunately, not every page was this, um, busy. But every page was proof that every writer needs an editor. I lucked out with mine.