Acharya Prashant explains that control is impossible without knowledge and understanding. He questions the nature of a mind that desires to act or control without knowing the 'what' and 'why' of its actions. He observes that most people live unintelligently, acting without understanding, much like a madman or a person acting under the influence. He clarifies that when one speaks of controlling the 'self', they are usually referring to controlling physical actions and, more importantly, the movement of thoughts in the mind.