For six months, I hadn’t known a moment of silence. Being a mother to Emma was the greatest joy of my life, but it was also a relentless marathon of diapers, feedings, and the constant, low-level humming of anxiety. My husband, Mark, was a devoted father, but he had a strange hang-up: he had never stayed alone with her. He claimed he was “clumsy” or “didn’t want to mess up the routine.”