Kristy, you are already changing the world and making it a better place, just by being who you are. By thinking for yourself, by being independent, by having hope, by wanting the best for your peers, by empathizing and sharing your heart with them, by wishing and wa...
Ah - I just thought of something: Eboo Patel's Interfaith Youth Core. http://wisdomology.com/cause/view_entry/10 Check it out and see if it resonates with you at all. And do let me know.