PowerToFly President Katharine Zaleski admits: “I didn’t realize how horrible I’d been – until I had a child of my own.” I still am embarrassed by this memory. Five years ago I walked into an office on the twenty-fifth floor of the Manhattan headquarters of Time Inc. (which owns Fortune.) I was there to meet with Time.com’s then managing editor and pitch a partnership idea, but once I took a seat and surveyed the endless photos of her small children spread across the airy space, I decided this editor was too much of a mother to follow up on the idea. I still went throug