Slowly but surely, we're beginning to turn the tide on childhood obesity in America. Together, we are inspiring leaders from every sector to take ownership of this issue.

I have a very eclectic iPod. So I've got my cardio people - so it's anything from Beyonce to some Jay-Z to Janelle Monae, her song 'Tightrope,' that's a good cardio song. And then I've got Sting. I've got Mary J. Blige. I've got The Beatles. I've got Michael Jackson. I try to pick the songs that I personally love.

You see, at the end of the day, my most important title is still 'mom-in-chief.' My daughters are still the heart of my heart and the center of my world.

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

My experiences at Princeton have made me far more aware of my 'blackness' than ever before.

You all have opportunities and skills and education that so many folks who came before you never could have dreamed of. So just imagine the kind of impact that you're going to make. Imagine how you can inspire those around you to reach higher and complete their own education.

I have never felt more confident in myself, more clear on who I am as a woman. But I am constantly thinking about my own health and making sure that I'm eating right and getting exercise and watching the aches and pains. I want to be this really fly 80-90-year old.