The internet-based intervention evaluated in this trial was designed with the aim of enhancing adherence to PwDM over a period of 60 days. The intervention focuses issues in disease self-management including lifestyle habits (e.g. nutrition, exercise) and medication adherence. The program comprised psychotherapeutic techniques gleaned primarily from CBT to promote motivation for health behavior, conveying goal setting, mediating knowledge about diabetes (basics, symptoms & complications, diagnosis, therapy) , and increasing activation to reduce depressive symptoms and increasing mindfulness skills. The delivery and training of content is continuously individualized to match users' preferences and needs, based on responses within the program. The intervention is delivered via the Internet and protected by individually assigned passwords.