If you are looking for some outside of the box thinking and inspiration, I would recommend checking out the books below.
Screw it, let's do it : lessons in life / Richard Branson
Jump in! : even if you don't know how to swim / Mark Burnett
Both very interesting life stories and quick reads.
I had a chance to hear Mark Burnett speak a couple of years ago and is he ever funny! No idea that he was so skilled (in a military way). Guess it makes sense that he'd come up with shows that test people in extreme environments.