Iris Marquez, 17, is battling cancer and wanted to cross the stage and graduate while she is still feeling strong. So the school district and staff at Taylor High School in Texas held a special graduation ceremony to help make her dream come true. Marquez shared her words of wisdom with her classmates. "Seniors, there will be times when you will be faced with situations out of your control. Don't let it harden your heart. Don't let it define who you are or prevent you from knowing your purpose in life," she told them.