I think the most moving part of my trip [to Africa] so far was seeing 92-year-old Nelson Mandela, and just thinking about his life. This man has lived through a struggle that few nations have known.

Barack and I have been in the public eye for many years now, and we've developed a thick skin along the way. When you're out campaigning, there will always be criticism. I just take it in stride, and at the end of the day, I know that it comes with the territory.

We got a commitment that 3 million nurses are going to be trained to better identify these signs [of PTSD], because, you know, when these troops come home and they become veterans and they go back into the civilian community, they're not always going through the VA system for medical care. They're going to show up at community hospitals and clinics.

For me, being a mother made me a better professional, because coming home every night to my girls reminded me what I was working for. And being a professional made me a better mother, because by pursuing my dreams, I was modeling for my girls how to pursue their dreams.

Like so many American families, our families weren't asking for much. They didn't begrudge anyone else's success or care that others had much more than they did, in fact, they admired it.

During the first campaign, one of my jobs as my husband's spouse was to travel around the country and really listen to women. There were voices that were new to me: the voices of military spouses, many of them women, and veterans.... I was overwhelmed by their challenges, and the notion that we as a country don't even know that these women exist, because we live in a country where one percent of the population protects the rights and freedoms of the other 99 percent of us. I thought that if I had the opportunity to serve as First Lady, I was going to use this platform to be their voice.

Since we started the Let's Move! initiative, I've been looking for as many ways as possible to help families and kids lead healthier lives. And I've come to realize that if we were going to take just one step to make ourselves and our families healthier, probably the single best thing we could do is to simply drink more water. It's as simple as that. Drink more water.