Many definitions of mentoring exist, although there is broad agreement in the existing literature that mentoring is both “relational” and “developmental.” Personal growth linked to mentoring is often viewed from a “deficit” approach that focuses on mentees’ difficulties. Emerging literature, however, has begun to adopt a more positive developmental theory-based approach that shifts away from viewing mentees as deficient and needing treatment to a more positive, empowering framework. To build upon this shift in the mentoring literature and translate the growing knowledge to young families, in this chapter, the authors propose expanding current conceptualizations of mentoring that expand the focus beyond one-on-one “treatment” approaches to embrace strengthening the social and relational connections for families, perhaps intergenerationally; to view families as competent and eager for positive development and health; and to be thriving-oriented rather than deficit-oriented. These are discussed as core principles to the practice of family mentoring.