Interest in humour has grown in recent years, especially in relation to its clinical applications. Humour helps relax, improve relationships with others, and reduce negative emotions such as anger. A person who suffers from psychological distress, can learn to open up to others through humour, to complain less, and to transform her mood in a positive way and find constructive solutions to her problems. Mix therapeutic action can help with humour change and improve the management of several diseases (both somatic and mental). Therefore, humour can play a vital role in promoting general and mental well-being. It may seem difficult to measure the health benefits of laughter, but a number of scientific studies done in a clinical setting support the benefits of humour therapy. The aim of this book is to show how humour can become a valuable tool for working in health professions.