One misconception is that entrepreneurs love risk. Actually, we all want things to go as we expect. What you need is a blind optimism and a tolerance for uncertainty.

You can’t focus on what everyone else is doing — it has to be about what’s really broken and what you can do to fix it.

We've had customers from the beginning. The reason people use Dropbox is because they really love it. We think more about who is going to be competing with what we are going to be doing, not with where we started.

The hardest-working people don't work hard because they're disciplined. They work hard because working on an exciting problem is fun.

Software touches all of these different things you use, and tech companies are revolutionizing all different areas of the world...from how we shop to how farming works, all these things that aren't technical are being turned upside down by software. So being able to play in that universe really makes a difference.

The happiest and most successful people I know don't just love what they do, they're obsessed with solving an important problem, something that matters to them.

You're not going to become a great manager overnight. You're not going to become a great public speaker or figure out how to raise money. These are the things you want to start the clock on as early as possible.