Narrowing Your Focus
Writers who cover too much about a topic often overwhelm their readers with information. Take, for example, an essay focused on the tragedies of the Civil War. What tragedies? Readers have no idea what to expect from this focus, not to mention how difficult it would be to write about every tragedy of the Civil War.
After writers choose a topic to write about, they need to make sure they are not covering too much nor too little about a topic. The scope of a focus is partially dictated by the length of the writing. Obviously, a book on the Civil War will cover more than a 500 word essay. Finally, focus is also determined by its significance, that is, its ability to keep readers' interest.