You think about who needs Dropbox, and it's just about anybody with a pulse.

With something like Dropbox, it was immediately like, 'Wow, this is literally something that anyone with an Internet connection could use.' Everyone needs something like this; they just don't realize it yet.

When I think about it, the happiest and most successful people I know don't just love what they do, they're obsessed with solving something that matters to them. They remind me of a dog chasing a tennis ball: Their eyes go a little crazy, the leash snaps and they go bounding off, plowing through whatever gets in the way.

Devices are getting smarter - your television, your car - and that means more data spread around. There needs to be a fabric that connects all these devices. That's what we do.

No one is born a CEO, but no one tells you that.

You only have to be right once.