I've noticed a strange stigma around indie writing that people who are looking to become successful writers need to be producing product all the time. It's a terrifying notion that must lead many writers into a period of shut-down. It certainly did that to me a few months ago before I came to my senses and powered through chapter after chapter of my draft.
Writing is not a sprint. It is a marathon. Especially when your project is a novel, you need to work at your own pace - but be wary of neglecting the job at hand. Write regularly, but don't become overwhelmed by the enormity of the project.
This brings me to my point, which is, a writer needs to take a break like the rest of the working world. Our brains need to be entertained, to relax, and to get sleep. Working a few all-nighters is fine, but not when you make it a habit just to produce as many books as author X. This sort of routine is not sustainable and is absolutely harmful to your health. I do just one all-nighter and it wrecks me for the rest of the week!
Remember to take breaks and recharge your imagination as you work on your projects. It's a fine balance between work and rest, but it's one that we need to take seriously as we pursue our goals of filling our bookshelves with our books.