FIND YOUR PURPOSE
If it helps, think of a camera: you See a sweeping landscape to photograph, but you know you can't get it all into one picture, so you pick
out a particularly interesting part of the scene. Focus in an essay works in the same way;
you zoom in, so to speak, on a particular part of your topic and make that the focus of
your writing.
Ask yourself...am I informing, entertaining or persuading the reader? Why am I writing this?