My children are very blessed.... That's why I think that mentoring is such a critical part of the role I can play in this position. I see how little bits of exposure and big bits of exposure really change my girls significantly, and I want that for more girls around the country and the world.

Celebrating the holidays in the White House over these past eight years has been a true privilege. We've been able to welcome over half a million guests... our outstanding pastry chefs have baked 200,000 holiday cookies... and Barack [Obama] has treated the American people to countless dad jokes.

People want to feel hopeful.

When I'm unhappy with something, people know, because I don't want to hold on to it. I'd rather deal immediately with the stuff that bothers me, so using my network - my girlfriends, my husband, my mom - I talk a lot, I vent.

Doing the impossible is the history of this nation. It is how this country was built

The biggest obstacle facing girls is education, education, education. There are too many kids who think high school is a pit stop to fame and fortune. I want girls in this country to think education is the coolest, most important thing they could ever do in their lives.

Throughout my life, I've learned to make choices that make me happy and make sense for me. Even my husband is happier when I'm happy.