Joyce captures something subtler than the familiar "you are what you do" maxim—he's describing a *temporal paradox* where your future self is simultaneously being built and already exists as a consequence of your past choices. What makes this different is the simultaneity: you're not waiting to become someone; you're already that person, even as you're still constructing them. A person struggling with an addiction recognizes this acutely: they are today the sum of yesterday's decisions to use or abstain, yet each morning offers a strange dual truth—they're already shaped, and yet still shaping. Joyce refuses the comfort of a clean break or fresh start, insisting instead on the honest reckoning that identity is a continuous, interlocking chain rather than discrete moments.