The other reason might be that you want to talk to voters when you've got seven primaries in seven days. Understand what's happened in this race - where we campaign actively in a state, and voters have the chance to see me directly, they check under the hood, and they kick the tires, when we don't have as much time.

If the global economy is unresponsive to people who feel left behind, if inequality continues to grow, then we could end up seeing more and more of these divisions arise throughout advanced economies around the world.

What I'm thinking about are the millions of people, many of whom write me very personal letters :"Dear Mr. President: I did not vote for you. I was against Obamacare. And then my son who didn't have health insurance signed up and we just found out that he had an illness. And thankfully he's now covered, otherwise he might not have gotten treatment and I might have lost my house."

You may want to prove that you're worthy of other kids or neighbors who were wealthier than you and teased you. You may want to prove that you're worthy of high expectations. But I do think that there is a youthful ambition that very much has to do with making your mark in the world. And I think that cuts across the experiences of a lot of people who end up achieving something significant in their field.

So don't get cynical. Cynicism didn't put a man on the moon. Cynicism has never won a war, or cured a disease, or built a business, or fed a young mind. Cynicism is a choice. And hope will always be a better choice.

My presidency is not over. I've got another five years coming up.

I have got to figure out a system because I have bad filing, sorting, and organizing habits.