Acharya Prashant explains that human consciousness typically exists in three states: waking, dreaming, and deep sleep. He introduces a fourth state, death, which is often overlooked because the body changes, yet it remains a state of consciousness. In the waking state, one is a citizen of the world, known as 'Vaishvanara'. In the dream state, a new world arises and one becomes 'Taijasa'. In deep sleep, a void or empty world exists, associated with the 'Anandamaya Kosha', where one is called 'Prajna'. Beyond these is 'Turiya', the state of the witness who can even observe death. Spirituality is the movement toward immortality, where one realizes that while the body and states of consciousness change, the core self remains as a witness. This liberation from life is also liberation from the fear of death. Acharya Prashant emphasizes that the practice of witnessing begins in the waking state by becoming detached from one's actions and thoughts. He clarifies that witnessing is not about creating a new thought of 'I am witnessing', but about being indifferent to the thoughts already present. Thoughts are like an orphan with no master; they cannot be controlled or suppressed effectively because the one trying to suppress them is the same as the one thinking them. Instead of judging thoughts as productive or unproductive, one should allow them to pass without providing them with energy or engagement. When one remains still and uninvolved, thoughts naturally lose their momentum and fall away, leading to a state of effortless silence or Samadhi.