The ability to effectively regulate one’s thoughts, feelings, and behavior is at the heart of human agency. Numerous insights in self-regulation have recently been gained utilizing the strength, or limited-resource, model of self-control. Much of this work has focused on the intrapersonal impact of self-control; however, an emerging body of work has begun to shift attention toward the interpersonal realm with similar success. In this article, we review the role that regulatory strength has in social influence. Work from persuasion, compliance, and conformity demonstrate that (1) resisting social influences consumes regulatory resources and (2) when these resources are depleted, people become more susceptible to social influences. We conclude by highlighting important implications that remain unanswered and suggest potential areas of future development.