The first part of the book features in-depth qualitative research fortified with first person testimonies examining the self-states or ‘modes’ of a person with psychosis or bipolarity. These self-states involve a range of features such as emotions, thoughts, motivations, and behaviours, which manifest as a pattern. Part two proposes the adaptation and application of Schema Therapy, a transdiagnostic approach targeting emotion and interpersonal functioning directly, to clinical work with these two groups. Offering unique insights, this text will appeal to a range of practicing clinicians such as psychologists, therapists, psychiatrists and those with a special interest in psychosis or bipolarity.