Acharya Prashant explains that the common concept of success, which includes money, social prestige, and professional excellence, often fails to provide lasting contentment. This dissatisfaction arises because such success is self-centered, defined with the 'me' at the center. When a person achieves their personal goals but remains restless, it indicates that the conceptual framework of success itself is flawed. To find true fulfillment, one must go beyond the fulfillment of the little self and aim for something higher than personal success.