Shlok 3-1-5
This Aatmaa can be experienced through a constant practice of Truth, Tap, right knowledge and Brahmcharya. Yogee who are pure, see this this Self-illuminated bright light within this body.

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This Self lives inside us. As it has been mentioned, to reach the last gate to the palace of this Self requires sincere efforts and cultivation of good habits such as truthfulness, austerity, right knowledge and self-control. Upanishadik verses repeatedly remind us to follow the path of contemplation and meditation. Self resides within the heart of all beings as well as in the Universe, knowledge dwells in the Universe, but to reside in the heart is different.

How to meditate? First you need to set a time for meditation, and during that time one should not be disturbed in any way. A quiet and calm corner of the house should be selected; and issues of time, place and posture play important roles in the path of meditation. You should sit in erect position, keeping the head, neck, and spinal cord in a straight line without tension. When the body is stilled in that position, a minor degree of happiness is experienced. For some breathing exercises a competent teacher is required.

After this one should learn to deal with the thoughts coming from unconscious mind. Then the person is instructed to become the witness and not get involved in analyzing or identifying himself with the pleasantness or unpleasantness of his thoughts. Eventually a time comes when the person takes delight in being a seer, then the mind and its thoughts do not disturb him. Meditation heals both body and mind. In this process, the mind becomes purified, calm as a calm lake and then one can see what is beneath the surface of the water - there lies the glittering, immortal jewel Aatmaa (Jeev). After reaching this state, the seer attains a deeper state of silence - known as Samaadhi. By Samaadhi, the habits of mind and body which are conditioned by Time, are dropped Then consciousness is expanded and the same consciousness remains all the time. Since prayers and contemplation deepen the inner awareness, they are auxiliary to meditation.

The seeker should not stop practicing this inward method and should not become involved in so-called Siddhi or supernatural experiences which he may have on the path of spirituality. Not all miracles remain miracles once you understand them. Sense perception is limited. The field of the conscious mind, though higher, is also limited. While the field of the unconscious mind, though vast, is like a vast dense forest, and one cannot go beyond it without the help of a competent teacher and meditative practices conducted regularly and punctually.