Don't worry about failure; you only have to be right once.

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.

Don't worry about failure; you only have to be right once.

Even if it doesn't work out, the experience is so valuable to so many employers that your worst case scenario is, 'Ok, so that was a bust, I'll get a six-figure job at whatever company.' Risk is this outmoded idea - your parents might not understand that, but taking these types of risks doesn't have a downside.

You become the average of the five people you hang out with.

If you have a dream, you can spend a lifetime studying, planning, and getting ready for it. What you should be doing is getting started.

You need that hunger no matter what, because eventually the honeymoon period wears off. Somewhere between printing your business cards that say 'founder' on them and everything else you have to do, you realize, 'Oh, actually this is a ton of work.'