Sheryl Sandberg is the COO of Facebook and a well-equipped one at that. She left Google for the social media megasite with the skills to tackle everything from communications to business development. She has also worked at the US Treasury and has worn several hats including human resources, sales, marketing and media, and more. She’s even an author of her New York Times acclaimed bestseller, “Lean In.” Her concern in this video is over the lack of women at her level. Sandberg highlights 3 key pieces of advice for women to stop leaning away from such success and instead step up to the challenge.