Being-towards-the-end (Sein-zum-Ende) stands as one of the most rigorously developed ontological concepts in the depth-psychological and existential-phenomenological canon, receiving its most systematic articulation in Heidegger’s Being and Time (1962). There, it designates not the biological terminus of life but the structural condition whereby Dasein always already comports itself in relation to its ownmost, non-relational, and not-to-be-outstripped possibility—death understood as an existential mode rather than an event. The concept is irreducible to any empirical account of dying: it cannot be appropriated from the deaths of others, nor captured by biographical, ethnological, or psychological typologies. What distinguishes Heidegger’s analysis is the insistence that Being-at-an-end and Being-towards-the-end are categorically distinct—the former a present-at-hand cessation, the latter a constant structural orientation pervading Dasein’s thrownness. Everyday Dasein characteristically covers over this orientation through the public ‘they,’ tranquilizing its ownmost anxiety before death into anonymous certainty. Authentic Being-towards-the-end, by contrast, demands resoluteness and anticipation. The concept intersects with temporality, care, guilt, and the possibility of Being-a-whole, making it a gravitational center for the entire analytic of Dasein. Depth-psychological readers—Hillman on character and the lasting life, Frankl on meaning in extremis—approach cognate territory through different idioms, while the corpus of Heidegger himself remains the indispensable primary source.