Sometimes people tell us, “If only I could write that novel…” and we just tell them, “What’s really stopping you from doing it? Write it already.” 
If it’s in your mind all the time, what really is the hold-up, am I right? If you want to be a writer, you write. Maybe nothing presentable, but you start with, say, a diary, or a blog, or something you can practice on. Even short stories. Freelance writers get paid through the nose for quality stories now. But…bookkepping is a fun career too, I suppose. hehe.
Best for the new year,
Paul