We have seen the place of exercise, eating, sleeping habits, Asanas, and pranayama in life. This is preparation for meditation. Yoga compares the mind with a lake. When agitated and restless, the lake can not reflect the sky. Only when it is calm and undisturbed, it can mirror the sky. In the same way, a calm and poised mind can reflect the universal energy. The final aim of meditation is to gain the vision of truth, to realise the oneness with all life and to enjoy peace and bliss.
For meditation, relax your body, sit comfortably in padmasana or sukhasana (squatting posture), keep your spine neck and head in a straight line. Let your chest spread out a little. First concentrate on your breath and breathe deeply. Exhale fully and inhale deeply a few times. Let the mind follow the breath and listen to its sound. Just listen to that and you will be able to hear the humming musical note within you. This is a part of cosmic vibration. By concentrating on this inner vibration, you will be in tune with the cosmic sound. Then all the ripples of thoughts and emotions will quieten. The lake of your mind will become still and you will experience peace and bliss. In this state of silence you will forget all differences and become one with all life.