Insomnia is a major public health issue, yet sleep problems are all but absent from the family therapy literature. This webinar introduces the main change factors of Cognitive Behavioural Therapy for Insomnia (CBT-I), the first line treatment recommended by the NHS and NICE, so that systemic practitioners can provide informed, evidence-based guidance to the 50% of clients attending clinical settings with severe sleep issues.It will share findings demonstrating that without attending to the beliefs and behavioural factors maintaining sleep issues, they are unlikely to improve even if other symptoms do, and how untreated sleep issues can compromise therapeutic outcomes and contribute to relapse. The webinar will support systemic practitioners to consider how they can combine their existing approach simply and coherently with the core principles of CBT-I, and how by exploring the relational meanings of sleep at micro and macro levels, a more accessible, acceptable, and effective intervention could be offered than via CBT-I alone.