The purpose of this proposal is to examine the theories of psychological hardiness and self-leadership side by side. The theories appear to be complementary constructs, grounded in very similar psychological theories and constructs. Furthermore, the interplay between the two theories could strengthen the efficacy of each theory, beyond what already exists independently. A person could use self-leadership to lead themselves to develop a hardy disposition effectively. The basic principles of hardiness and self-leadership share enough foundational elements to be similar yet distinct theories, complementing each other in meaningful ways. However, the primary limitation of this paper is its theoretical nature. Therefore, future research should shed light on the possibilities presented herein.