This book is about the accuracy of the impressions that people hold of themselves. It focuses not on mountaineers but rather on the rest of us who face all those more mundane but no less important summits in our own lives, such as getting an "A" in that important class, getting promoted at work, raising smart and moral children, or perhaps even writing one's first book. It explores whether people have adequate insight into their capacities and their talents. It examines whether people are aware of their shortcomings. It assesses whether they have a good sense of the content of their character.