I think it's imperative to follow your heart and choose a profession you're passionate about, and if you haven't found that "spark" yet, if you're not sure what you want to do with your lives - be persistent until you do.
Despite the amazing diversity we're blessed with in this country, schools are still in large part segregated because of economic disparity. Sports are one of the few areas where kids are really given the opportunity to interact with those of different races and religions.
I learned that people everywhere are basically the same and have similar goals that we do. They want health and happiness and the opportunity to provide for their families.