When I first held my daughter, right after she was born, I felt like it was the moment I'd been waiting my whole life for, and it just felt even more miraculous than I ever could have imagined.

Thinking about the world writ large, I am more optimistic than not that we will tackle our most pressing challenges, whether poverty or equality for women and girls or climate change; but I also know we'll only tackle them if people are really informed about the challenge and what's proven to work.

My mother has often said that the issue of women is the unfinished business of the 21st century. That is certainly true. But so, too, are the issues of LGBT rights the unfinished business of the 21st century.

We need women who are at the head of a boardroom, like at the head of the White House, at the head of kind of major scientific enterprises so that little girls everywhere can then think, you know what? I can do that, I want to do that, I will do that.

Caricatured as navel-gazers, Millennials are said to live for their 'likes' and status updates. But the young people I know often leverage social media in selfless ways.

It just seems so fundamental to me. I'm able to marry the person I wanted to marry. That's the fundamental human imperative. Those of us who have been lucky enough should expand these rights to others.

I am so proud and grateful to be my mom's daughter.