Lost in the Himalayas after a failed attempt at the beast of mountain called K2, Greg Mortenson found himself in a small village in mountainous Pakistan. After the villagers nursed him back to health, he promised to return and build them a school. And although he had no house, no money, and didn't speak in the language, he returned with supplies and build a school for the villagers. Oh yeah, he then returned and build more than 30 schools all around Pakistan and Afghanistan.
He also started a non-profit group called the Central Asia Institute dedicated to building more schools and helping community. His story is chronicled in the awesome book "Three Cups of Tea," which I recommend to all of you.
So if you are ever doubting whether you can achieve your goals, think of Mr. Mortenson, I mean, if he can travel around the world, to help children, you can do anything you put your mind to, even if it involves swimming in money.