This text examines the ontological relationship between being and action, emphasizing that being is never a static given but must be continuously and actively performed. The author distinguishes between two fundamental types of activity: the primary performance of being itself, which precedes the establishment of a subject, and the subsequent actions of an already constituted subject directed toward the external world. Although it is necessary to conceptually differentiate these two levels, they exist in a state of profound mutual interaction. Every individual action exerts a back-influence on the performance of being and shapes its ongoing trajectory. At higher ontological levels, it becomes evident that a subject-event can realize its being specifically through its activities directed toward its environment. Being and action thus form a dynamic unity where the subject establishes itself as a center integrating all its manifestations. This perspective defines existence not as a passive state, but as a continuous process of self-creation through interaction with the world, emphasizing that higher-level beings constitute themselves through their outward engagement.