Not since Arlie Russell Hochschild laid out the lives of women who worked inside and outside the home in her 1989, jaw-droppingly astute book, The Second Shift, has someone so clearly articulated the machinations that have held back women from leadership, and what we can do about it. Anne Doyle’s Powering Up: How America’s Women Achievers Become Leaders, is a perfect follow up for those who have marshalled troops to help with the second shift and are already leaning in.