Commitment occupies a peculiar crossroads in the depth-psychology corpus: it is simultaneously a linguistic signal, a therapeutic instrument, an existential act, and a psychodynamic threshold. Miller’s motivational interviewing framework treats commitment most rigorously as speech-act data — the ‘CATs’ taxonomy (Commitment, Activation, Taking Steps) locates it as the mobilizing apex of change talk, the point at which preparatory ambivalence tips toward enacted decision. Najavits, in the trauma-substance abuse register, domesticates commitment into structured clinical ritual: Action Plans, session check-outs, and weekly pledges that function as containers for patients whose self-regulatory capacity has been shattered by PTSD. Ricoeur intervenes philosophically, insisting that commitment cannot be read as a monologic intention — it is irreducibly dyadic, a promise made to another, whose very constancy across time constitutes narrative selfhood. Strassman surfaces the psychodynamic shadow: commitment can be unconsciously encoded as terror — capitulation to an abusive other — so that the formal intention to commit conceals a prior wound around trust and vulnerability. Benveniste illuminates the archaic linguistic stratum, tracing commitment’s cousin, the vow, through Greek eukhesthai and Roman votum as a consecration of the self to a divine economy of reciprocal obligation. These voices do not harmonize easily: the behavioral tradition quantifies commitment language; the existential tradition grounds it in finitude and choice; the clinical tradition operationalizes it as recovery behavior; the philological tradition reveals its sacred genealogy.