Acharya Prashant explains that in the Upanishads, Om is a powerful symbol of transcendence representing the journey of consciousness through three sounds: 'A', 'U', and 'M'. 'A' corresponds to the waking state of consciousness, where one is body-identified and perceives the material world. To transcend this state, one must first know it well, including one's gross actions and the facts of the world. 'U' refers to the deeper, more subtle level of the mind that is usually unavailable to the conscious self, manifesting in dreams and latent tendencies like fear, anger, and greed. Transcending 'U' requires becoming a watcher of these hidden mental layers. Moving further, 'M' represents the deepest 'I' instinct or the causal body, where the world disappears and only a sense of bliss remains, similar to deep sleep. Acharya Prashant warns that even this bliss must be overcome because it is temporary and deceptive. The ultimate goal of Om is to move beyond these three states into the fourth, which is total transcendence or disappearance of the self. He describes Om as both the method and the destination; as the sound of Om fades into silence, it symbolizes the seeker melting away and attaining freedom. Thus, Om is considered the highest support because it serves as the path for a prisoner of consciousness to reach liberation.