I write because writing is something that I have to do. And it doesn't matter whether people like it or not. When I write, I feel the pressure and anxiety that come with taking an empty piece of paper and trying to fill it with something from your own consciousness.
Be miserable. Or motivate yourself. Whatever has to be done, it's always your choice.
Van Gogh never made a penny in his entire lifetime. He painted because it was his soul, his excitement. It was what aligned him with his Source of being. It's the same with me and writing.