Aiming for perfection causes frustration at best and paralysis at worst.

I am saying that I was able to mold those hours around the needs of my family, and that matters. And I really encourage other people at Facebook to mold hours around themselves.

Women attribute their success to working hard, luck, and help from other people. Men will attribute that - whatever success they have, that same success - to their own core skills.

Men can comfortably claim credit for what they do as long as they don't veer into arrogance. For women, taking credit comes at a real social and professional cost.

The things that hold women back, hold them back from sitting at the boardroom table and they hold women back from speaking at the PTA meeting.

When my mother took her turn to sit in a gown at her graduation, she thought she only had two career options: nursing and teaching. She raised me and my sister to believe that we could do anything, and we believed her.

Speak up. Believe in yourself. Take risks.