This post isn't exactly a cigar-butt idea, nor is it timely but nevertheless I thought you might find it interesting. I enjoy reading about truly successful people - and I don't mean the Bondi hipster types. Elon Musk is one such person. A true super star. He walked away with $180m from his share of PayPal and proceeded to invest in not one, but three incredibly risky but potentially humanity improving start-ups: SolarCity, Tesla, and SpaceX.
What I find even more incredible about this story is that he stood behind the companies with his own and it got to the point where all of his PayPal money was committed to these projects and ended up having to borrow money from friends to pay rent. That's true grit.
A good interview can be seen here (around the 9.30 mark):
https://www.youtube.com/watch?v=uegOUmgKB4E
https://www.youtube.com/watch?v=uegOUmgKB4E
Kristian
Disclosure: no position in the above companies.