Non-fiction is factual writing that can take various forms, including persuasive essays. To write a persuasive essay, one must choose a topic, narrow it to a specific argument, and develop a clear thesis statement. Choosing a topic involves picking an issue you care about that has two reasonable sides and evidence to support it. Narrowing the topic involves deciding your position and framing the topic as a question beginning with "should." The thesis is then a statement of the main argument you will prove.