Today's world is hard on women and girls. And the silent tug-of-war we wage with one another can make it even worse. Now - more than ever - we require each other's support, collaboration, mentorship and compassion to ensure we all can rise up and succeed. Jealousy, hostility, mistrust and covert competition only serve to keep girls and women down. By committing to being comfortable and confident in our own skin - rather than de-valuing others to find value in ourselves - we can step up and step in to reverse these trends for good.