Whether as a daydream or a spoken desire, nearly all of us have entertained the notion of reinventing ourselves. Feeling unfulfilled, burned out, or just plain unhappy with what we're doing, we long to make that leap into the unknown. But we also hold on, white-knuckled, to the years of time and effort we've invested in our current profession.

In this powerful book, Herminia Ibarra presents a new model for career reinvention that flies in the face of everything we've learned from "career experts." While common wisdom holds that...