The document discusses how rapid changes in technology and the economy create an uncertain future for jobs and careers. It argues that to stay relevant as these changes occur, individuals must take on the role of their own CEO to plan for professional reinvention. The document provides four steps to plan for reinvention: 1) cultivate self-awareness of strengths and areas for growth, 2) view one's career as a "jungle gym" not a ladder to seek new experiences, 3) make space for creativity, and 4) build professional networks to support reinvention. Taking an active role in one's own career development and reinvention is necessary to adapt to ongoing changes.