Sean Parker

CEO and co-founder: Airtime

"How can you as an entrepreneur that’s had success, has a reputation, ever build the courage to go and do something again? There’s a sort of fear of launching something and failing. I had to decide I am going to try to go the road less traveled and just be an entrepreneur that’s willing to go back and start things from scratch.”

Mark Zuckerberg

CEO and co-founder: Facebook

"Facebook, I didn’t start to ‘start a company.’ It was mostly just through wanting to build it and having it be this hobby and getting people around me excited. It eventually evolved into a company. But I never understood the psychology of wanting to start a company before deciding what you wanted to do. Explore what you want to do before committing."

Sheryl Sandberg

COO: Facebook

"The most important career choice you'll make is who you marry. I have an awesome husband, and we're 50/50."