As long as I can remember, I've wanted to make an impact on this world—for my life to have significance and purpose. In the American culture, we are taught from a young age that we can do anything we set our minds to, and that we can quite literally change the world. Whether it's making a scientific breakthrough, becoming a successful businessman, working to eliminate poverty, or simply being a positive influence in our family and community, most of us have aspired to do something meaningful with our lives.