You could use it. But remember that a college essay isn’t a journal or a therapy session. You do NOT need to reveal your deepest secrets. Your goal is to make them want you on campus. You likely have multiple ways you could answer the prompts. Figure out what is interesting and unique about you, and use that. Have you read this?
http://talk.collegeconfidential.com/college-essays/2003258-essay-tips-to-consider.html#latest