. >> booktv continues with sylvia ann hewlett. she argues that to reach leadership positions in the u.s., especially for women, the key is to find a senior-level person who champion your career and advocate for you. mentors may build your self-esteem, but will not help you move up. this is about an hour. >> thank you and welcome to this amazing evening. this is our third book launch at the new york stock exchange, and it's thrilling to be back in this magnificent place. and also wonderful to be here with melinda. for books and 11 articles later we know each other pretty well. but i want to start by paying tribute to the corporate leaders in this group. the task force has grown from seven, the 75 global companies over the last nine years. we moved from being a very modest startup to being a global think tank, which has really changed how we conceive of talent, as well as how we manage. our many accomplishments over the last nine years, the publications, 250 new best practices. none of this could have been done without your courage,