We can make a commitment to promote vegetables and fruits and whole grains on every part of every menu. We can make portion sizes smaller and emphasize quality over quantity. And we can help create a culture - imagine this - where our kids ask for healthy options instead of resisting them.
You may not always have a comfortable life and you will not always be able to solve all of the world's problems at once but don't ever underestimate the importance you can have because history has shown us that courage can be contagious and hope can take on a life of its own.
My experiences at Princeton have made me far more aware of my 'blackness' than ever before. I have found that at Princeton, no matter how liberal and open-minded some of my white professors and classmates try to be toward me, I sometimes feel like a visitor on campus; as if I really don't belong.
We learned about honesty and integrity - that the truth matters... that you don't take shortcuts or play by your own set of rules... and success doesn't count unless you earn it fair and square.
See, that's why Barack's running: to end the war in Iraq responsibly - to build an economy that lifts every family, to make sure health care is available for every American - and to make sure that every child in this nation has a world-class education all the way from preschool to college.
And I love that even in the toughest moments, when we're all sweating it - when we're worried that the bill won't pass, and it seems like all is lost - Barack never lets himself get distracted by the chatter and the noise. Just like his grandmother, he just keeps getting up and moving forward... with patience and wisdom, and courage and grace.
I love that for Barack, there is no such thing as 'us' and 'them' - he doesn't care whether you're a Democrat, a Republican, or none of the above... he knows that we all love our country... and he's always ready to listen to good ideas... he's always looking for the very best in everyone he meets.
We learned about dignity and decency - that how hard you work matters more than how much you make... that helping others means more than just getting ahead yourself.
The fact is, with every friendship you make, and every bond of trust you establish, you are shaping the image of America projected to the rest of the world. That is so important. So when you study abroad, you're actually helping to make America stronger.
It wasn't so long ago that I was a working mom myself. And I know that sometimes, much as we all hate to admit it, it's just easier to park the kids in front of the TV for a few hours, so we can pay the bills or do the laundry or just have some peace and quiet for a change.
If proud Americans can be who they are and boldly stand at the altar with who they love then surely, surely we can give everyone in this country a fair chance at that great American Dream.
I'm not asking any of you to make drastic changes to every single one of your recipes or to totally change the way you do business. But what I am asking is that you consider reformulating your menu in pragmatic and incremental ways to create healthier versions of the foods that we all love.
One of the lessons that I grew up with was to always stay true to yourself and never let what somebody else says distract you from your goals. And so when I hear about negative and false attacks, I really don't invest any energy in them, because I know who I am.
I am an example of what is possible when girls from the very beginning of their lives are loved and nurtured by people around them. I was surrounded by extraordinary women in my life who taught me about quiet strength and dignity.
Women in particular need to keep an eye on their physical and mental health, because if we're scurrying to and from appointments and errands, we don't have a lot of time to take care of ourselves. We need to do a better job of putting ourselves higher on our own 'to do' list.
Exercise is really important to me - it's therapeutic. So if I'm ever feeling tense or stressed or like I'm about to have a meltdown, I'll put on my iPod and head to the gym or out on a bike ride along Lake Michigan with the girls.
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.
We learned about gratitude and humility - that so many people had a hand in our success, from the teachers who inspired us to the janitors who kept our school clean... and we were taught to value everyone's contribution and treat everyone with respect.
For the first time in my adult lifetime, I am really proud of my country. And not just because Barack has done well, but because I think people are hungry for change. And I have been desperate to see our country moving in that direction.
At the end of the day, when it comes time to make that decision, as president, all you have to guide you are your values, and your vision, and the life experiences that make you who you are.