Your answers will help you write a more concise first draft. You have to practice, which means you have to keep writing.
Sometimes I feel that I am writing pages and pages of crap but then some wonderful idea emerges from it. This is a marathon, not a sprint. People have a low limit on their perceived value of books.
This sounds obvious, but it may be the most overlooked step in the process. So budget for hiring an editor, proofreader and cover designer. Thankfully, there is no shortage of these courses available for you to choose from.
This took me about two months and it prompted thoughts, ideas and characters that I would not otherwise have come up with. And in one way or another, the reason is always the same: the author quit.
The truth is that writers come from all walks of life, and some of the most successful authors in the world often lived half their life with no real intention of ever writing a book. Yes, you are going round in circles, but you are rising higher all the time.
However, in the past when I have let it slip I have sometimes felt mentally burned out. Note: If you wrote your book in Word, you can use conversion software such as Calibre to convert it to. While the story you tell is certainly important, so is the way you tell it.