Pushing yourself to be the best is unsustainable. Simply push yourself to be better than the day before.

What's important to me is that I put messages out, whether it's a TED talk, whether it's a book.

Spending too much time focused on others' strengths leaves us feeling weak. Focusing on our own strengths is what, in fact, makes us strong.

When we help ourselves, we find moments of happiness. When we help others, we find lasting fulfillment.

We can rationalize anything and easily quit on ourselves. Leadership is refusing to quit on others.

Listening is not understanding the words of the question asked, listening is understanding why the question was asked in the first place.

In the 1980s America reacted to the Soviet Union's invasion of Afghanistan. We supported a war that left a nation torn to pieces. And as the last Soviet tank left the country, so did we.