Building on previous studies of college students' writing self-efficacy beliefs, this article presents the empirical foundation for a reconceptualized understanding of this identity process. The study assessed 131 college freshmen enrolled in a developmental writing course who were evaluated holistically using grounded theory methodology. The study identified (a) major theoretical categories revealing the nature of students' initial pessimism about themselves as writers and sense of learned helplessness and (b) a subsequent shift toward optimism and self-efficacy triggered by a particular learning relationship formed with their instructors, the core of the posited mediated-efficacy theory. Implications for college-level developmental writing pedagogy are explored.