The more you know about your own process, the better you'll be able to manage your writing. Some writers will do better if they write the essay and then revise it. Other writers will do better to plan before they write. Based on your own process, budget your time. Keep it simple . . .
Creativity can be a good thing and is often effective.
But, if you're nervous or concerned about your writing, stick to the basics and leave creativity for another project. Most of these prompts could lead you into writing a book. Instead, think about ways to limit what you'll discuss. A few ways to limit topics are by location, person, time, generation, race, religion, and gender. Think about your audience and what will be most effective for them.