Asking about personal identity and its implications are of central questions in metaphysics, philosophy of mind, and undoubtedly theology and eschatology. The essential components of this enquiry can be articulated by these questions: Who am I? What am I constituted of? What does differentiate me from others? How do I persist through time? Based on the responses to these enquiries various philosophical accounts of personal identity have been shaped: Substance Dualism, Property Dualism, Predicate Dualism, Continuity of Consciousness, Psychological Continuity, Bundle Theory, and No-Self Theory, to name a few. One of the essential problems in personal identity is identity persistence through time. This problem, which can be articulated as identicalness of an individual at time T1 to an individual at time T2, has significant implications for subsequent questions in the fields of ethics and philosophy of law. The proposed resolution for this problem brings out its practical consequences in ethics, agency, and responsibility.