If you are struggling to establish or develop some aspect(s) of your college essay, dig through the resources below to help gather some ideas on how to troubleshoot.
For the many, many of us who are responding to common app prompts, this can give you some specific pointers and examples.
Though these posts are targeted toward specific experiences, I think they actually provide a pretty solid guide on how to share (or not share) any potentially vulnerable or controversial elements of your person.
If you find yourself in a pickle, here is a guide that shows you how to write a (subpar, but decidedly better than nothing) college essay in one sitting.