Instead, write an essay that sounds like you are talking to a favorite aunt or uncle. After reading your essay, the committee member should know something about your personality, your style and your values. Be careful when using humor. Your sense of humor may not match that of your reader. The best transfer essays I've read tell a story that only that writer can tell - about a personal accomplishment or a personal failure, or about a job or volunteer opportunity that lead to a major or career decision.
Good essays are always quite personal without being sentimental.
Be honest Bragging or inflating your role or accomplishments is usually ineffective. Having someone else help you too much with your essay, or even writing it for you, is not a good idea. The best essays sound like they were written by someone your age. They aren't so polished and smooth that they read like the work of a pro. After years of practice reading essays the admissions officers and faculty who make admission decisions are quite astute in picking out the student voice.