Write an arguable statement that reflects your opinion on the subject matter. Then write an opinionated statement that directly opposes it. This ensures that your thesis is debatable. For example, "Homeopathic remedies are effective" is an arguable statement on the subject of homeopathy.
Write an essay title that notes your opinion, without the use of first-person writing, and indicate that the essay includes information in support of your viewpoint. For example, "The Reasons Why Homeopathy Is as Effective as Conventional Medicine" is an objective title for a persuasive essay.
List at least three statements that support the angle of your title, such as "Homeopathic prophylaxis and conventional vaccinations are equally effective." This gives you a basic outline for your essay, as each statement can serve as a topic sentence of the body paragraphs.
Research each of your statements or topic sentences to find credible sources that support your claims. Use this information to supply the details of each body paragraph, relying on quotes from experts, verifiable statistics and study findings. Discard or rewrite any statement for which you cannot find credible sources to cite.
Avoid the use of first-person writing, assumptions and generalizations. The information within your essay should be verifiable and specific.
Read your first draft from the perspective of someone who disagrees with your stance. Ask yourself what questions or arguments he would have with your essay. This can help you identify areas in which you need additional research and sourcing, as the essay may contain vague information or inconsistencies.
Revisit your draft a few days after writing it, if possible, and ask another person to read and assess it. Time away from your work can help you see it with fresh eyes, as can feedback from someone else. Revise the essay if necessary.