Lesson to learn here: an idea is just an idea. It's all about execution. I also had the idea, I'm sure Jeff Bezos has had the idea, Tony Hsieh, Nike execs...

Lesson to learn here: an idea is just an idea. It's all about execution. I also had the idea, I'm sure Jeff Bezos has had the idea, Tony Hsieh, Nike execs... Point is these guys delivered. The single greatest lesson any entrepreneur can learn.