Dr. phil. Astrid Schreyögg, Berlin, psychotherapist, supervisor, coach; head of research at the German Academy of Psychologists of the BDP for Supervision and Coaching; domestic and international fellow; trainer for supervision and coaching; textbook author.Dr. phil. Christoph Schmidt-Lellek, Frankfurt a.M., studied prot. theology, philosophy and pedagogy, freelance practice in coaching (DBVC), psychotherapy and supervision (DGSv), publications in the fields of psychotherapy and coaching.