Although I've only written one manuscript (and it's still largely in an early draft state), one thing I learned very quickly was that I simply cannot properly revise my own writing within the first few days of writing it. If I do, I catch myself processing words that are several words ahead of what I'm actually reading (because I know what it's going to say) and I pass right over glaring flaws.
Of course, in dealing with this, I have this story in my head that's so crisp and clear and well-mapped out I just had to get it down on paper. That done, I now spend an average of 3 days reading, revising, and rewriting each individual page. But my attention span doesn't allow me to work on significant segments in a linear fashion. A week ago I was in Chapter 10, a few days ago I was in Chapter 2, today I'm working on Chapter 27. It's like a psychotic jigsaw puzzle.
But I'm so impressed with the literary quality of the story (I seriously can't fathom how it came out of my head at times), I figure I'll reread it thousands of times over the next several years to insure every nuance, detail, and line of dialogue is where it needs to be.
How vain it is to sit down and write when you have not stood up to live.
--Henry David Thoreau