This text examines the nature of reflection as a constitutive act of the subject, which is continuously shaped and reshaped through its actions within the environment. The author challenges the conventional view that restricts reflection and self-awareness solely to human consciousness. Instead, the study proposes that a form of primary reflection is essential for any being-event to establish its own subject and transition from a virtual to a real existence. The self-constitution of an event is intrinsically linked to the formation of real relationships with its surroundings. By returning to itself after encountering the external world, the entity acquires a primal experience and establishes its subject, enabling further agency. The relationship between the constitution of the subject and its activity is portrayed as mutually dependent and unified. This inquiry opens a path for a broader ontological understanding of subjectivity that transcends traditional psychology and anthropocentric views on consciousness, emphasizing the dynamic and processual nature of reality.