This study explored the developmental process of self-advocacy among nurses and proposed a conceptual framework, The Nurse Becoming Model of Self-Advocacy, to contribute to middle-range theory development.

A constructivist grounded theory design guided this study. Data was gathered from 29 nurses through in-depth individual and group interviews across academe, hospitals, and professional organizations in Region I and the Cordillera Administrative Region. Theoretical and disconfirming sampling was used to refine categories. Data was analyzed using constant comparative methods.

Self-advocacy emerged as a developmental trajectory comprising four interrelated stages: self-preservation, selfdevelopment, self-actualization, and self-transcendence. Novice nurses often relied on protective strategies such as silence and conformity, while experienced nurses engaged in assertiveness, credibility-building, leadership, and collective advocacy. Nurses emphasized that self-advocacy extended beyond the individual to encompass patients, the profession, and society, while highlighting its relational and collective nature.

Self-advocacy is a dynamic process and core dimension of professional identity. It evolves through stages of growth, integrating self-care, competence, engagement, and transcendence. Supporting self-advocacy through education, mentoring, reflective practice, and enabling organizational structures enhance nurses' well-being and strengthens their capacity to advocate for patients, advance the profession, and contribute to societal transformation. The Nurse Becoming Model of Self-Advocacy offers a transferable framework to guide nursing research, education, and policy toward empowerment and resilience.