Kevin O'Leary

Working 24 hours a day isn't enough anymore. You have to be willing to sacrifice everything to be successful, including your personal life, your family life, maybe more. If people think it's any less, they're wrong, and they will fail.

A lot of people have said a lot of great things about Steve Jobs. And for good reason: he built the world's second-most valuable company, with billions in profits and products that have improved every aspect of our lives. But Steve didn't get there by being a soft, fluffy, Kumbaya-type leader.

You make your first album, you make some money, and you feel like you still have to show face, like 'I still go to the projects.' I'm like, why? Your job is to inspire people from your neighborhood to get out. You grew up there. What makes you think it's so cool?