Mantra means projecting from the mind. From yoga, mantras are the "codes" that unlock your pituitary and pineal glands, the master glands of the body.
Use this mantra before starting any Kundalini Yoga meditation or yoga set. It tunes you in to being here and now. It connects you with the Golden Chain of Teachers and creates a safe and protected container for your practice.
If you find yourself stuck and your creativity won't flow, try this mantra.
Having a bad dream or nightmare? Start repeating Ong Namo Guru Dev Namo over and over (out loud or silently) until you feel "cleared and cleaned" from the dream.