Pregnancy and parenthood can lead to challenges in the workplace—legal, social, and practical—that can derail a woman’s ambitions and undermine her success. But times are changing, and each day brings another high-profile conflict between parenting and the workplace: from the controversy over companies covering the costs of egg-freezing to the debate over parental leave and childcare inspired by Marissa Mayer’s policies at Yahoo.

Here’s the Plan is an indispensable playbook for mothers in the workplace, offering practical, brass-tacks guidance while simultaneously digging deep into our cultural conversation about motherhood, workplace values, and professional ambition. Author Allyson Downey—founder of weeSpring, the “Yelp for baby products,” and mother of two young children—advises readers on all practical aspects of ladder-climbing while parenting, such as negotiating leave, flex time, and promotions.

Written by one working mom for the benefit of others, Here’s the Plan is the definitive guide for ambitious mothers.