I am more of a fiction writer, so writing essays or nonfiction doesn't come as naturally to me. The need does occasionally arise, however. I normally wouldn't have much trouble with it, except that the topics for my current essays are... different than usual.
I am supposed to write an essay on a specific discipline (focus, consistency, etc.). This topic doesn't leave much room for deviations or opinions, so I'm having trouble making the essay longer than a few paragraphs. I am using a fairly simple outline (definitions, uses, examples, etc.).
Question: How can I add to the essay with useful information?