Mindfulness works - for both the patient and the therapist. This book illuminates the topic of mindfulness for the first time from the perspective of its effective factors, allowing psychotherapists from all schools to benefit. Elements of mindfulness can contribute to the effectiveness of psychotherapy in psychodynamic, behavioral, systemic, and humanistic traditions. The authors identify seven specific effective factors of mindfulness and demonstrate how these can be implemented with different emphases in mindfulness-based approaches - but also implicitly in other methods - to be effective for various disorders. Another focus is the description of the Hakomi method. In this psychodynamic individual therapy, mindfulness permeates the therapeutic relationship and the therapist's attitude.