You’re trying to juggle a dozen things at once – an unforgettable first line, a fresh voice, an original theme, complex characters, mood and tone and conflict and a sense of mystery, and so on and so forth. In so doing, there’s a good chance you’ve inadvertently lost the most important element of all – clarity.
Triage. I didn’t come up with this myself. I heard it from the editor Sol Stein, who likens revision to battlefield triage - treating patients in priority order, not first come first serve. For a book, this means tackling the big stuff first. The stuff that is most likely to make a huge overarching impact on the book.
We’re talking about things like character arc, plot, point-of-view, entirely new scenes...
I spend a lot of time encouraging writers to reach into their hearts and get out of their heads (those inner critics are serious assholes). Only, there does come a time to unleash your intellect. That time is called revision.
These are my own tried and true techniques for revising without getting overwhelmed.