Whenever I write a novel, I just keep writing until the first draft is complete, relying on the momentum I build to carry me through to the end. I don't edit as I go along; I just keep writing the story, getting it down on the page. Utilising this method means that I rapidly begin to doubt that what I've written is any good, culminating in a complete panic attack near the end of the draft, at whic...h point I've usually convinced myself that it's terrible and I can't write for toffee.
Then I start the editing process, and realise that what I've produced isn't that bad at all - in fact, it might be pretty good, if I can manage to get the edits right. That's where I'm at now with the current novel: thinking, "wow, this isn't too bad at all".
It's a painful and unhealthy way to work, and means that I produce a lot of drafts of each book, but I do it every damn time.
I think I might be a masochist.