Acharya Prashant explains that the mantra 'Om Tat Sat' is a triple designation of Brahman, as declared by Shri Krishna in the Bhagavad Gita. He notes that the mind is continuously conditioned by repetitive worldly experiences, such as the cycle of day and night or the feeling of being the body. To counter this continuous conditioning, spiritual practices rely on the power of repetition. Just as the Upanishads repeat 'Shanti' three times to address the threefold nature of unrest, 'Om Tat Sat' serves as a potent threefold reinforcement of the truth. Even a single utterance of this mantra contains three distinct pointers toward the same ultimate reality. He breaks down the components of the mantra, starting with 'Om', which symbolizes the entire universe and the states of consciousness. The sounds 'A', 'U', and 'M' represent the waking, dreaming, and deep sleep states, respectively, while the silence following the sound represents the formless Brahman. 'Tat', meaning 'That', is used because no specific name can truly describe the limitless Brahman; any name would be a limitation. Finally, 'Sat' refers to that which is real, essential, and unchanging. Unlike worldly objects that disintegrate or disappoint, 'Sat' is the dependable reality that does not vanish. Thus, 'Om Tat Sat' is a powerful threefold remembrance of the truth.