I guess that depends on the type of business you in. You can be successful being a professional and putting in your 40 hours a week. It's very hard to have a st

I guess that depends on the type of business you in. You can be successful being a professional and putting in your 40 hours a week. It's very hard to have a startup working 40 hours a week, in fact, I'd love to know who's done that, ever. Successful startups are successful because the founders obsess about them, they think about them when they are going to bed and when they wake up; it consumes their lives. That leads to more than 40 hours a week. There's something to be said for the quality of work too. For Jeff Bezos, like Steve Jobs, the value wasn't in long hours, but in quality decisions. That said, I'm sure they both worked very hard to build Amazon and Apple early on.