Once you’ve read the prompt and answered the question, look at your answer and attach three reasons why you think your answer is correct. For example, if a prompt asks you if you think that working harder for things makes you appreciate them more, you answer could be a simple yes. This is not a thesis. However, the statement "Working hard for things makes you appreciate them more because you have to sacrifice, focus and overcome obstacles to get them," is a thesis statement. Simply write a paragraph on each of the reasons and your essay is written. Just make sure that you add an intro and conclusion before emitting a sigh of relief.