This document provides a summary of Nathaniel Branden's book The Power of Self-Esteem. It begins with a preface that defines self-esteem as having confidence in one's ability to think and cope with life's challenges, and confidence in one's right to be happy and feel worthy. The introduction discusses the lack of information about self-esteem when Branden first started writing about it in the 1950s. It also examines different definitions of self-esteem and argues that a precise definition is important to understand this psychological concept. The document then provides a high-level overview of the contents and purpose of Branden's book.