I’ve posted before on the same topic, but I always find it refreshing to hear that an author I admire and respect experiences the same frustrations, the same months of maddening story frustrations, that I do. It helps to hear other writers talk about their process, and her process sounds very similar to mine. If you find yourself second-guessing your own writing process, I recommend reading what other writers have to say about theirs until you find someone who matches yours. Then you tell youself: “See, you’re not crazy after all. So-and-so writes exactly the way you do, so stop agonizing about it and get back to work!”
Writing a novel is an act of consistency, for the most part. Being religious about showing up day after day after day after ever-loving day, getting a little work done each time, is what gets a novel written, revised, polished, and ultimately done.