We're going to have to change our traditions, our history.

It's hard to change adults, and it's hard to change it from a political position or a perceived political position.

I felt, as a lawyer, when I was mentoring and working with kids, that I gained a level of groundedness that I just couldn't get sitting on the forty-seventh floor of a fancy firm. Selfishly, it gives me joy - it makes me feel like my life has a purpose.

I had the honor of meeting a young Pakistani woman named Malala Yousafzai, who was shot and nearly killed just for trying to go to school. I also heard about how nearly 300 girls in Nigeria were kidnapped from their school dorms in the middle of the night. There are girls like this in every corner of the globe. In fact, there are more than 62 million girls worldwide not attending school, and that's an outrage.

I look at how my kids view exercise. They have a complete understanding that nutrition and exercise go hand in hand. I didn't think like that when I was a kid. But they have a real consciousness about it that I'd like to think comes from the years of attention we've put into this.

And Barack and I were raised with so many of the same values, like you work hard for what you want in life. That your word is your bond; that you do what you say you're going to do. That you treat people with dignity and respect, even if you don't know them and even if you don't agree with them.

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.