Can Scrum really be used to write novels?

I began this blog as a way to express myself and unashamedly build a platform for my future writing. I understand that even if I write the best books ever made, if no one buys them, then it'll be like I wrote nothing at all. So I thought I had found a good outlet to discuss the ongoing project of writing a book, as well as the process itself. One of the thoughts I had while writing was about how each of us contend with different forces inside our own heads as we write. I considered how there were some days when I would be thinking all about my world or about how I can improve a scene or a character in some way, and then when I sat down to write it, I couldn't find the motivation. So even though I wanted to write, I couldn't because of a little voice in my head telling me not to do it.