Not only can you not plan the impact you're going to have, you often won't recognize it when you're having it.

The beauty of Twitter is that more and more people are flocking to it because it's shrinking their world.

If there's ever an example of the importance of making bold bets and focusing on what you love, it's Twitter.

Not only can you not plan the impact you're going to have, you often won't recognize it when you're having it.

I was in Shanghai recently, where Twitter is blocked, and yet there were ads and billboards across town with hashtags on them.

As you get ready to walk out under the bright lights of the improvisational stage of the rest of your life... be bold. Don't always worry about what your next line is going to be.

When youre doing what you love to do, you become resilient. You create a habit of taking chances on yourself. If you do whats expected of you, and things go poorly, you will look to external sources for what to do next, because that will be your habit. You will be standing there frozen. If you are just filling a role, you will be blindsided.