Friends and Coming Out

For the past few months I have wanted to speak the truth with the people I live with. But when I come close to even uttering the words of honesty I turn into a coward and shut down. The thing is I don't know why I act so cowardly because I've already been honest with myself about this, I've already been honest with the people in my family I care most about with this, and I've already been honest with most of my friends I've come to know on campus. So, why can't I figure out how to speak the words of truth to the people I live with. To the people I've become not only close with but friends too. Maybe it's because I'm afraid of how they will think of me, maybe it's because I'm afraid of how much of friendship will change, or maybe I just am a coward. I don't know but what I do know is that I feel like Hannah Montana living a secret life by not letting anyone see who I am truly. I always say, "Never be anyone but yourself", so why can't I follow my own advice? Why is this so difficult, why?