In Latino culture, the quinceanera's a big thing - it's when a girl becomes a woman. But I think age is just a number - you become a woman with the responsibilities you take on and the decisions you make. I started realizing that every day is a gift - you have every day to be thankful you're alive.
It is not so much what you believe in that matters, as the way in which you believe it and proceed to translate that belief into action.