Many people, especially older people, find that they have increasingly poor hearing, especially in a noisy environment, in the pub or in a larger, lively conversation. But: not hearing well is by no means normal, even as you get older. This book explains how hearing works and shows, in a program of 20 exercises that build on each other, how we can improve and train our hearing ability step by step. Body geometry, spatial localization and processing of perception play a central role. Through the principle of self-regulation, in combination with training, the original hearing ability inherent in each of us can be rebuilt step by step. The method presented in this book is based on clear physical principles and over ten years of practical experience of the author.