My husband and I make physical activity a priority in our lives, and our daughters love being active as well. And while we each have sports and activities we enjoy, we try to go for hikes or bike rides together whenever we get the chance. We've found that the best way to help our girls be active is to find activities they truly enjoy.

While budgets are tight right now, there are schools across the country that are showing that it doesn't take a whole lot of money or resources to give our kids the nutrition they deserve. What it does take, however, is effort. What it does take is imagination. What it does take is a commitment to our children's futures.

African American children are significantly more likely to be obese than are white children. Nearly half of African American children will develop diabetes at some point in their lives. People, that's half of our children. ...We can build our kids the best schools on earth, but if they don't have the basic nutrition they need to concentrate, they're still going to have a challenge learning.

The one thing I believe is that families are off-limits. And I think my husband said it, and he was clear on that. And I totally agree with him.

Do not bring people in your life who weigh you down. And trust your instincts ... good relationships feel good. They feel right. They don't hurt. They're not painful. That's not just with somebody you want to marry, but it's with the friends that you choose. It's with the people you surround yourselves with.

Every Thanksgiving, Barack sits down to call some of our troops and thank them for their service. When he tells me about these conversations, it always reminds me of how blessed we are to live in a country where men and women will stand up to protect our freedoms and preserve our way of life. And whenever I've had the chance to meet with these heroes and their families, I've always walked away inspired by their courage and in awe of their strength.

All of us are driven by a simple belief that the world as it is just won't do - that we have an obligation to fight for the world as it should be.