evidence: The best writers are the most persistent, and Dame Agatha Christie was no exception. She wrote 85 books in her lifetime and her maximum estimated sales is currently 4 billion. [...] For someone as prolific as Christie, you’d be forgiven for thinking writing came to her as naturally as breathing. But, she struggled just like everyone else. She said of writing, "There is no agony like it. You sit in a room, biting pencils, looking at a typewriter, walking about, or casting yourself down on a sofa, feeling you want to cry your head off." Frustration is all part of the package. Think of Agatha Christie next time you get the blank-page syndrome. To get ahead, you simply need to get started. Write something down, even if you don’t think it’s good.