Bridgewater's founder, Ray Dalio, wrote an amazing internal document on his principles of work, business, and life is an amazing read... one of the top pieces of nonfiction I've ever read --

http://www.bwater.com/Uploads/FileManager/Principles/Bridgew...

Edit: Seriously, regardless of what you're surfing online right now, stop it and go read Principles. It's worth it.