One thing that I've learned that is extremely important when writing college essays is to make it memorable and personal; don't write anything someone else could write. I think as long as your voice shows in the essay and you use specific examples and things that are unique to only you, it should be okay. If it's a generic, "I hated choir but worked hard and now I'm awesome and did a solo" essay, you should probably rethink it. But as long as it's not something anyone else could write, I'd say you're good to go.