For many women in their 20's and 30's, the greatest professional hurdle they'll need to overcome has little to do with their work life. The most focused, confident, and ambitious women can find themselves derailed by a tiny little thing: a new baby. Here's the Plan offers an inspiring roadmap for working mothers steering their careers through the parenting years. 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.