What I tell everyone, and I really do for myself is, I have a long-run dream, which is I want to work on stuff that I think matters.

The more women help one another, the more we help ourselves. Acting like a coalition truly does produce results. Any coalition of support must also include men, many of whom care about gender inequality as much as women do.

Grief comes and goes, it ebbs and flows. I think one of the lessons of this for me is that there's no one way to grieve. Everyone does it in their own way, in their own time, and we all process life and its challenges and its ups and downs as they come.

Success for me is that if my son chooses to be a stay-at-home parent, he is cheered on for that decision. And if my daughter chooses to work outside the home and is successful, she is cheered on and supported.

In our performance reviews with women, we need to be saying, "Are you reaching enough? Are you applying for jobs when you meet some of the criteria like men, or are you waiting to meet all the criteria like women do?" There's so much we can do to encourage women to take on more and believe in themselves.

I have never met a woman, or man, who stated emphatically, "Yes, I have it all.'" Because no matter what any of us has—and how grateful we are for what we have—no one has it all.

The most important thing we're doing differently is that we talk openly about gender at Facebook.