The design is a randomized controlled study with three different conditions (CBT-I versus waiting list versus TAU) that will be compared over time. We will use an A-B-design which can effectively compare the different conditions in the study. We have recruited a total of 62 patients, and completed a individual session with each of these individuals resulting in a total admission of 38 participants in the study. The remaining 24 patients either didn't fit the selection criteria, or we were unable to get in touch with them to agree on an appointment.