Generally speaking, an argumentative essay is a piece of writing the main purposes of which are to express your opinion on a specific subject and provide interesting facts to support your opinion. You can't be too emotional here, on the contrary, use formal language to remain professional. To make your argumentative essay catchy, choose a topic that fits you best, first of all. Then, write a thesis statement and conduct research. Make a list of evidence and choose 3 strong arguments. Don't forget to structure your essay, include an introduction and a conclusion.