Isvara Pranidhanat meditation has a recognition that god or a supreme being that governs all exists. Them one surrenders completely breaking down walls and becoming completely absorbed in the union of this awareness.

Union is near for those with faith and vigor.
Yoga Sutra 1-21 Audio mp3

The results vary depending on intensity and dedication toward
union. There is a mild, medium and intense approach.
Yoga Sutra 1-22 Audio mp3

Complete surrender to God in profound meditation brings union.
Yoga Sutra 1-23 Audio mp3

God is complete and unaffected by affliction, suffering and karma.
Yoga Sutra 1-24 Audio mp3

From God comes the seed of all knowledge.
Yoga Sutra 1-25 Audio mp3

Preparation
Find a comfortable seated position that does not stress the joints. This will allow the body to remain stable with little or no pain and discomfort. Aces and pains can be a major distraction when meditating so spend a little time getting comfortable. It is also important to be seated firm and upright so that one does not drift away in sleep.

Exhale all of the air from the lungs. (Leave a little air in the lungs, the karma is smooth on the inhalation.)

Inhale into the belly so that the air meets little resistance. (The air collides with the earth in the ribs and thoracic region quickly on inhalation. Allow diaphramic breathing to occur sending air to the lower part of the lungs early in the inhalation.)

Meditation Technique and blending techniques

"The sound of Aum allows the yoga practitioner to tune into universal vibrations."

Create a Mantra that reflects union and surrender.
(Mantra Meditation)

There is an old yoga breathing technique called Bhramari. This is done by exhaling the air while making the sound of a humming bee. This is also a good way to tune into the oneness of Yoga.