If you find writing easy, you’re doing it wrong.
"One useful tip for aspiring writers comes from the film A River Runs Through It, in which the character played by Tom Skerritt, a Presbyterian minister with a literary bent, receives essays from his children and instructs them to make each successive draft 'half as long.' If you want to write a successful 700-word op-ed, start with a longer draft, then cut and cut again."
Article: Tips for Aspiring Op-Ed Writers