As a child, Avis Cardella devoured the glamorous images in her mother's fashion magazines. She grew up to be one of the people in them, living a life that seemed to be filled with labels and luxury. But shopping had become a dangerous addiction. She forwent food for Prada. Credit card debt blossomed like the ever-increasing pile of unworn shoes and clothing in the back of her closet. She defined herself by the things she owned and also lost herself in the mad hunt for the perfect pair of pants or purse that might make her feel whole.

Spent is Avis Cardella's timely, deeply...