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

Don't always worry what your next line is going to be.

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

When I was your age, we didn't have the Internet in our pants. We didn't even have the Internet not in our pants. That's how bad it was. I know I sound like my grandfather right now. We didn't have teeth! There were no questions marks, we just had words! What was I talking about? The Internet...Not only can you not plan the impact you're going to have, you often won't recognize it when you're having it.

Believe that if you make courageous choices and bet on yourself and put yourself out there, that you will have an impact, as a result of what you do. And you don't need to know now what that would be or how will it happen because no one ever does.

Twitter is a global town square.

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.