An "exploratory instrumental case study" design was used to study interactions between leaders and employees at a large faith-based nonprofit healthcare organization. The study used a four-part intervention to infuse humility into leaders' language, verbal expressions, and non-verbal behaviors, as well as the physical settings in which the interactions occurred. The study made a unique contribution to the field of leadership education in several ways. The researcher worked closely with two leader-practitioners to develop customized leader humility programs using the intervention tool. Following each leader-employee interaction, leaders had a chance initially to reflect on the experience through a journaling exercise and subsequently to discuss the experience in a one-on-one interview with the researcher. This article shares the key findings from the study along with each leader's unique development experience, as well as a recommendation for people who are charged with developing leaders in academic or organizational settings.