Over the past few years as First Lady, I have had the extraordinary privilege of traveling all across this country.
I have seen it in the incredible kindness and warmth that people have shown me and my family, especially our girls.
I've seen it in people who become heroes at a moment's notice, diving into harm's way to save others...flying across the country to put out a fire...driving for hours to bail out a flooded town.
How would we keep them grounded under the glare of the national spotlight?
First lady Michelle Obama addresses the DNC after being introduced by military mom Elaine Brye, from PBS NewsHour.
Our life before moving to Washington was filled with simple joys...Saturdays at soccer games, Sundays at grandma's house...and a date night for Barack and me was either dinner or a movie, because as an exhausted mom, I couldn't stay awake for both.
I loved Barack just the way he was.
But when Barack started telling me about his family – that's when I knew I had found a kindred spirit, someone whose values and upbringing were so much like mine.
My father was a pump operator at the city water plant, and he was diagnosed with Multiple Sclerosis when my brother and I were young.
But every morning, I watched my father wake up with a smile, grab his walker, prop himself up against the bathroom sink, and slowly shave and button his uniform.
But despite these challenges, my dad hardly ever missed a day of work...he and my mom were determined to give me and my brother the kind of education they could only dream of.
But my dad still had to pay a tiny portion of that tuition himself.
He was so proud to be sending his kids to college...and he made sure we never missed a registration deadline because his check was late.
Like so many of us, that was the measure of his success in life – being able to earn a decent living that allowed him to support his family.
Barack was raised by a single mother who struggled to pay the bills, and by grandparents who stepped in when she needed help.
And for years, men no more qualified than she was – men she had actually trained – were promoted up the ladder ahead of her, earning more and more money while Barack's family continued to scrape by.
And she would often tell Barack, "So long as you kids do well, Bar, that's all that really matters."
They didn't begrudge anyone else's success or care that others had much more than they did...in fact, they admired it.
That's how they raised us...that's what we learned from their example.
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.
Those are the values Barack and I – and so many of you – are trying to pass on to our own children.
And standing before you four years ago, I knew that I didn't want any of that to change if Barack became President.
You see, I've gotten to see up close and personal what being president really looks like.
And as President, you can get all kinds of advice from all kinds of people.
So when it comes to rebuilding our economy, Barack is thinking about folks like my dad and like his grandmother.
That's why he signed the Lilly Ledbetter Fair Pay Act to help women get equal pay for equal work.
That's how he brought our economy from the brink of collapse to creating jobs again – jobs you can raise a family on, good jobs right here in the United States of America.
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.
And he believes that women are more than capable of making our own choices about our bodies and our health care...that's what my husband stands for.
And believe it or not, when we were first married, our combined monthly student loan bills were actually higher than our mortgage.
That's why Barack has fought so hard to increase student aid and keep interest rates down, because he wants every young person to fulfill their promise and be able to attend college without a mountain of debt.
Because Barack knows what it means when a family struggles.
Barack knows the American Dream because he's lived it...and he wants everyone in this country to have that same opportunity, no matter who we are, or where we're from, or what we look like, or who we love.
So when people ask me whether being in the White House has changed my husband, I can honestly say that when it comes to his character, and his convictions, and his heart, Barack Obama is still the same man I fell in love with all those years ago.
He's the same man who, when our girls were first born, would anxiously check their cribs every few minutes to ensure they were still breathing, proudly showing them off to everyone we knew.
That's the man I see in those quiet moments late at night, hunched over his desk, poring over the letters people have sent him.
I see the concern in his eyes...and I hear the determination in his voice as he tells me, "You won't believe what these folks are going through, Michelle...it's not right. We've got to keep working to fix this. We've got so much more to do."
And I didn't think it was possible, but today, I love my husband even more than I did four years ago...even more than I did 23 years ago, when we first met.
I love that we can trust Barack to do what he says he's going to do, even when it's hard – especially when it's hard.
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.
And he reminds me that we are playing a long game here...and that change is hard, and change is slow, and it never happens all at once.
We get there because of folks like my Dad...folks like Barack's grandmother...men and women who said to themselves, "I may not have a chance to fulfill my dreams, but maybe my children will...maybe my grandchildren will."
So today, when the challenges we face start to seem overwhelming – or even impossible – let us never forget that doing the impossible is the history of this nation...it's who we are as Americans...it's how this country was built.
And if so many brave men and women could wear our country's uniform and sacrifice their lives for our most fundamental rights...then surely we can do our part as citizens of this great democracy to exercise those rights...surely, we can get to the polls and make our voices heard on Election Day.
Because in the end, more than anything else, that is the story of this country – the story of unwavering hope grounded in unyielding struggle.
And I say all of this tonight not just as First Lady...and not just as a wife.
My daughters are still the heart of my heart and the center of my world.
Because today, I know from experience that if I truly want to leave a better world for my daughters, and all our sons and daughters...if we want to give all our children a foundation for their dreams and opportunities worthy of their promise...if we want to give them that sense of limitless possibility – that belief that here in America, there is always something better out there if you're willing to work for it...then we must work like never before...and we must once again come together and stand together for the man we can trust to keep moving this great country forward...my husband, our President, President Barack Obama.