According to the teachings in Chapter 14, how can one achieve the state of non-duality or oneness?

According to the teachings presented in Chapter 14, achieving a state of non-duality requires a fundamental shift in perspective. The process begins when one surrenders to the single Essence that is present not only in one's own body but throughout the entire universe. This surrender fosters a sense of oneness with all. The text strongly emphasizes that if even a trace of difference or separateness remains in the mind, the true state of non-duality cannot be reached. One must learn to see Brahman pervading everything, from Brahma down to a blade of grass, and completely abandon the perception of duality to become peaceful.