Introduction
OM symbolizes deep realities: OM Mantra itself is not a mere human invention, going along with particular cultures or groups. Rather, the OM Mantra (or AUM Mantra) is a symbol of deep realities that already exist. For example, the deep vibration quality is definitely experienced by the mystic traveler, whether or not one has ever heard of the OM mantra as such. The levels of gross (A), subtle (U), and causal (M), and the states of waking (A), dreaming (U), and deep sleep (M) are definitely there, regardless of the symbolism captured in the mantra when stated as AUM Mantra. It is these realities that are most useful in our spiritual practices.
Making the experience richer: If the OM mantra is repeated just for the feeling, having no sense of meaning at all, the experience can be quite pleasant, calming, and balancing. However, if one has a sense of the deeper meanings of the mantra, and different methods of using it, then the experience can be even richer and more revealing as one progresses in yoga meditation.
Practice one of the seven: Following are seven meanings and methods of using the mantra. By experimenting with the various methods, one of them may emerge that feels most personally in tune. It might be best to practice only one of the seven methods of OM mantra for a while. Gradually the other meanings will come, as they all merge into a unified experience.
Integrate the insights: The use of this mantra can be profound. At first, it is best to use the mantra gently and for short periods of time. The insights from the OM mantra can be significant, and it is good to integrate the insights gradually with daily life.