Already, Abraham Maslow developed therapeutic methods designed to encourage his clients to adopt an attitude of gratitude. Martin Seligman has built upon this with his 'letter of gratitude.' Studies in positive psychology show that gratitude is central to our personal happiness. Those who are grateful for the good they have experienced in the past, who prefer to focus on their successes rather than their failures, are also more satisfied with the present. Film producer Rhonda Byrne calls gratitude the most important secret to a good life. The economic crises of recent years have led many people to realize that, alongside material values, there are many things for which we can be grateful and that are worth nurturing. According to findings in positive psychology, an attitude of gratitude can help heal depression, anxiety, hostility, as well as physical and emotional crises. A key reason for the healing power of gratitude is certainly that it is, for example, impossible to be grateful and aggressive at the same time. Gratitude fosters positive feelings such as forgiveness, patience, helpfulness, and hope. This book presents practical interventions, exercises, experiments, and rituals that psychotherapists, educators, and counselors can use to help their clients begin a practice of gratitude in their lives.