This paper examines how young adults integrate generative artificial intelligence chatbots into everyday life and the implications of these engagements for the constitu-tion of selfhood. Whilst existing research on AI-mediated subjectivity has predomi-nantly employed identity frameworks centered on social positioning and role enact-ment, this study foregrounds selfhood—understood as the organization of subjective experience through narrative coherence, interpretive authority, and practices of self-governance. Drawing upon Paul Ricœur's theory of narrative self and Michel Fou-cault's concept of technologies of the self, the analysis proceeds through in-depth qual-itative interviews with sixteen young adults in Norway to investigate how algorithmic systems participate in autobiographical reasoning and self-formative practices. The findings reveal four dialectical tensions structuring participants' engagements with ChatGPT: between instrumental efficiency and existential meaning; between algorith-mic scaffolding and relational displacement; between narrative depth and epistemic superficiality; and between augmented agency and deliberative outsourcing. The anal-ysis demonstrates that AI-mediated practices extend beyond instrumental utility to reconfigure fundamental dimensions of subjectivity, raising questions about interpre-tive authority, narrative authorship, and the conditions under which selfhood is nego-tiated in algorithmic environments. These findings contribute to debates on digital subjectivity, algorithmic governance, and the societal implications of AI systems that increasingly function as interlocutors in meaning-making processes.