My kingdom for a book

I'd love to write a book. I don't know what topic I could know enough about to be an authority on the subject. And have no story in my head that would make a good novel.

Why is it always "the great American novel"? Isn't it more inclusive to say "the Great Novel"???

I apologise in advance for my next comment, to anyone that has ever written a book, for I am sure I trivialise it. (here it is) I always sort of assumed if I ever tried to write something of substance, it would just sort of flow out of my and onto the page. An incorrect assumption, I'm certain.