We need all hands on deck, and that means clearing hurdles for women and girls as they navigate careers in science, technology, engineering, and math.

I believe that each of us-no matter what our age or background or walk of life-each of us has something to contribute to the life of this nation.

I know what makes me happy. I pick the clothes that make me happy - sometimes people like them, sometimes they don't. I try to listen to my own internal guide.

I want to feel like the things I did made a difference. That's one of the reasons I spend time greeting people on rope lines, because I'm always thinking, 'Maybe this interaction, particularly if I'm meeting kids, will change someone's life.' That's how I think about the work I do as First Lady. It's a rare spotlight. I want to make sure I don't waste it.

Style helps distinguish you . . . It's a great potential opportunity that people tend to leave by the wayside

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.

But we need a medical community that's trained and knowledgeable and working on advancement.