This study examines how participants in the faith‐based voluntary simplicity movement, referred to here as “Simple Livers,” draw on the complex interactions of ideology and emotions as they construct a moral identity focused on social change. Drawing on qualitative data from participant observation and interviews, I examine the use of moral repertoires—combinations of principles, practices, and feelings, including guilt, pride, and frustration, grounded in both the Christian faith and the tenets of voluntary simplicity. I engage with the new literature on lifestyle movements to argue that the moral repertoires of Simple Livers reinforce these ideologies, resulting in the construction of an over‐conforming moral self.