The chapter presents the Setback and Mindset module of intensive CBT-E, designed to address the instability of early treatment gains and the common occurrence of setbacks. These are framed as the reactivation of the eating disorder mindset, characterized by the over-evaluation of weight, shape, and eating control, which drives eating disorder behavioural features, and prevents engagement with alternative and appropriate mindsets. Patients are taught to identify triggers, recognize early warning signs, and rapidly decentre from the eating disorder mindset to avoid relapse. Additional procedures aim to consolidate recovery by fostering psychological decentring and reducing the dominance of weight and shape in self-evaluation. These include historical review to explore the origins of eating disorder concerns, balancing acceptance and change (accepting natural body weight while reducing unhealthy weight-control behaviours), and strategies for resisting sociocultural pressures. Practical interventions, such as discarding emaciated clothes, managing comments on appearance, and engaging in healthy physical activity, are recommended to support body acceptance and resilience. Overall, this module emphasizes relapse prevention by equipping patients with skills to manage mindset shifts, contextualize their difficulties, and promote long-term recovery.