Matias Gay, RN, MScN(c), is a suicidologist, researcher, and clinical leader specializing in youth suicide prevention, narrative identity, and person-centered care across emergency and mental health systems.

Part I: Suicide and the Self: A Journey Through Time, Identity, and Meaning 1. 58 Years Later: Where Are We Now?2. Who Am I, and Why Does It Matter? Suicide, Identity, and Meaning Part II: Existence 3. Who Are You? An Existential Model for Understanding Suicidality4. Mapping the Self: A Deep Dive into the ENSI Model and Its Clinical Applications5. Navigating Suicidality: A Psychological Map for Identity Reconstruction6. Rewriting the Broken Narrative: Meaning-making and Suicide Prevention through Identity Reconstruction Part III: Relations 7. The Family Factor8. The Weight of a Generation: Cohort Effects on Suicide9. Land, Identity, and Healing: Understanding Indigenous Suicide Part IV: Narratives 10. Stories That Shape Us: The Suicidal Narrative11. Beyond Silence: Stories as Medicine in Indigenous Communities12. Cultural Scripts of Suicide: Agency, Identity, and Obligation Part V: Emotions 13. The Tension of Suicide: Ambivalence and the Fight Within14. A Distance Between Us: The Quiet Ache of Isolation 15. Suicidal Countertransference: The Silent Conversation Part VI: Instinct 16. The Vulnerability Equation: How Innate Risk and Unbearable Life Events Shape a Path to Suicide 17. Inside a Suicidal Mind: The Anatomy of Acute Crisis