The Importance of Optimism in Life - Mark Zuckerberg

Optimists tend to be successful, and pessimists tend to be right. There's something to it. If you're discussing any idea, there are reasons why it might not work. And those reasons are probably true. But is that the most productive way to view the world? The most productive and successful people tend to be optimistic because if you don't believe something can be done, why would you go work on it?