The Robert Wood Johnson Foundation Executive Nurse Fellows (RJWF-ENF) program was the gold standard for executive career development of nurse leaders from 1997 to 2017. With more than two decades of experience, ENF program leaders encouraged the fellows to "trust the process" during the difficult times of leadership development and value the collegial relationships they could develop with other nurse fellows. This article describes the benefits of the Action Learning Model for leadership development through the experience of the Boom-X-2K action learning team from the RWJF-ENF final cohort of 2014-2017. The moniker Boom-X-2K was chosen to emphasize supporting the intergenerational development of nurse leaders from three generations: Baby Boomers (Boom), Generation X (X), and Millennials (2K). This article also describes the action learning team's end product: a self-assessment tool designed to evaluate leaders' self-assessed ability to influence. [J Contin Educ Nurs. 2021;52(7):344-348.].