How to be Great...

I've been listening to a lot of news lately. There are some scary stories out there, people doing irresponsible things, but I find there is always a gem hidden out there and search for the stories of those doing good. Which makes me ponder further: How do you encourage pupils to push themselves to greatness? Not just for their own personal gain, but so they leave a lasting, positive impression on our Earth. Is there a miracle lesson plan out there? Do I lead by example? Am I big enough to be the change I wish to see in the world?