One of the psychotherapist's greatest challenges is maintaining a balance between professional standards and managing a range of personal emotional responses when working with clients. As therapists were people before they were professionals, they frequently struggle with feelings of anger, frustration, hatred, boredom, cynicism, indifference, blaming, power struggles, withdrawal, burnout, and other intense and unstable feelings. During the clinical hour, these very private feelings are unwanted, unpredictable, and run counter to their identity as professional and competent clinicians. As Freud (1933) confessed, "No one, who like me, conjures up the most evil of those half-tamed demons that inhabit the human beast, and seeks to wrestle with them, can expect to come through the struggle unscathed" (p. 109). We argue in this chapter, however, that these negative feelings can be important