The problem is when that fun stuff becomes the habit. And I think that's what's happened in our culture. Fast food has become the everyday meal.

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.

If my future were determined just by my performance on a standardized test, I wouldn't be here. I guarantee you that.

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.

The truth is, in order to get things like universal health care and a revamped education system, then someone is going to have to give up a piece of their pie so that someone else can have more.

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.

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.

When it comes to the health of our families, Barack refused to listen to all those folks who told him to leave health reform for another day, another president. He didn't care whether it was the easy thing to do politically - that's not how he was raised - he cared that it was the right thing to do.

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.

There are still many causes worth sacrificing for, so much history yet to be made.