The leadership field is evolving rapidly, particularly with regard to methodological advancements in empirical research. This progress has intensified criticism of traditional leadership models. Nevertheless, the fundamental questions driving the field remain largely unchanged: What behaviors define effective leadership? Are our theories accurately capturing these behaviors? How distinct are the practical approaches of various leadership schools? This chapter seeks to shed new light on these enduring questions by advocating for interdisciplinary exploration, particularly drawing insights from clinical psychology. In this domain, it is widely recognized that certain “therapeutic non-specifics”—such as client characteristics (e.g., expectations), therapist attributes (e.g., competence or adherence to protocols), and the therapeutic alliance—consistently influence outcomes across different therapy approaches. By examining these therapeutic concepts, this chapter aims to connect them to existing organizational research and inspire new directions in leadership studies.