I'm a little late to this thread but that video on Sam Berns was very inspirational. Just read the Wikipedia entry and saw that he passed away early this year .
His mentality was way ahead of how I used to think at his age. I sort of wonder how I might've been had I been exposed to such a person at an earlier stage in my own life. How could I be so ungrateful for what I had back when I was 17? Anyway I'm glad I stumbled on this thread at all and it's in my collection of Youtube videos I like referring people to.