Materials
At the start of the intervention, participants receive a workbook and a USB stick. The workbook contains exercises, visual representations of the metaphors and summaries of each session. The workbook includes two calendars for therapy appointments and the planning of homework assignments. At the beginning of every session, the patient receives the content of that specific session, which is added to the workbook. Furthermore, the USB stick contains the recorded summaries of every session and the mindfulness exercises. A booklet for relatives, containing information on the treatment is included in the workbook. The therapists receive a manual with instructions per session, which also includes the content of the patient's workbook.