From Writer Unboxed:
I edit books for a living, so I know it’s true that writing is rewriting. But I’ve sometimes seen clients fall into editing traps that can cause real damage to their work. Although some simply waste valuable writing time, others get so caught up in the wrong kind of editing that they either lose sight of or actually blot out their vision of the book.
Before we get into these traps, a caveat. Every writer has their own approach to writing, including rewriting. There are plenty of exceptions to everything I say here. So unless you recognize yourself in the problems I describe, feel free to ignore me.
Do not start editing too soon. I’ve written before about how all the elements of a story interconnect with one another to form a complex ecosystem. If you start delving into detailed rewrites before your story, with all of its interconnected character and plot threads, is in place, then you are probably not doing all the editing you need. You cannot know how a character’s voice should sound until you know who they become. Nor can you judge the importance of descriptive details or the relative weight of different events until you know where your story is going. And you may waste time editing scenes that you later cut.
It’s tempting to jump into the editing too early. You may have reached a critical juncture in the plot where you’re not sure what happens next, so you dive back into the weeds of what you’ve written so far, looking for a way forward. Sometimes this works. But more often, the editing is just a distraction. It’s better to buckle down and finish your first draft before you start delving into the details.
Link to the rest at Writer Unboxed