Your paper should have a thesis statement (or main argument) on the first page; you should also state here what your paper will cover. Correspondingly, your paper should end with a conclusion, one that ties the paper together and wraps up your main idea(s), bringing closure. Between the introduction and conclusion should be the story, e.g. support and defense of your arguments, evidence, examples, anecdotes, history, comparisons and contrasts, etc. Personal commentary and autobiography are only appropriate when minimal and accompanied by critical analysis and/or thoughtful synthesis, which can include linking it to the literature on your topic and/or placing it in a comparative or historical context.