Acknowledge this picture from the Net.

In the 28th dharana of Vigyana Bhairava Tantra, Shiva says

Dragging the mind repeatedly to the heart 

Reduce mind movements

Realize the power of now

This dharana extends from the previous one, also related to focusing on the heart. The word that Shiva uses, dwadhashnata, refers to a number of points in the mind body system, to spaces between which the breath energy prana travels. Commentators like Joo, and Satyasangananda Saraswati relate the heart to this verse.

Shiva talks about forcibly dragging the mind to the heart region again and again in order to reduce the fluctuations of the mind to reach moments of extraordinary awareness.  Satyasangananda says that the mind expands breaking away from the body fetters and enters the realm of the spirit. In the extraordinary moment or moments of such perception, the transient nature of the world and our own self within becomes starkly clear.

As i have said before Yoga Nidra meditation takes one to this state powerfully.

Anything relating to the heart reminds me of what Ramana taught. In one of his discourses, Ramana explains the concept of maya. Reaching back to Shankara, Ramana says quoting Shankara: Brahman is real; universe is unreal; Brahman is the universe.  He explains: when we perceive the universe as being separate from the Brahman, all that we perceive is unreal. When we see anything as apart from the Self, atman or Brahman, it becomes unreal.

Ramana does not quibble with differences between Brahman, Atman, Self etc in explaining the Reality. The cosmic reality and the individual reality become a holographic mix.

He explains: Brahman or the Self is like a movie screen. The universe or the world is the picture that appears on it. Only in the background of the screen we can see the picture. When we become the screen what remains is the Self. There is no separation between the observer, observed and the process of observing.

Ramana advocates the process of Self Enquiry, continuous enquiry of who am i, in order to become the screen. As an aid, he recommends focusing on the right side of the heart, which is the seat of the Self.

Yoga Nidra allows us to enter the deep sleep state, which Mandukya Upanishad defines as the state of  prajna or awareness. Ramana says that in deep sleep state we do not connect with body awareness and with ego. In our normal deep sleep state, as we keep moving between sleep and wakefulness, we do not reach true awareness. In Yoga Nidra we can reach awareness by bringing our focus to the heart, which is the locus of deep sleep consciousness.

With the awareness created in deep sleep, we enter the Fourth State of Turiya or samadhi. We then get a glimpse of who we really are. We become the screen.

Practise Yoga Nidra and become Shiva.