Om is the sound of God. It is absolute consciousness and is beyond duality. Om is the root of all language, the beginning of all. Om is the first word: ‘there was the word and the word was God’ ( as stated in the Bible). Om is the gunas vibrating in unity, Om is the vibrational level we live in. Om represents the deep sleep state, the dream state and the waking state. We transend the dream and waking state to arrive to deep sleep state where eternal bliss resides. In deep sleep there is no duality, there is no consciousness and so there is no reference. It is pure bliss. When we come to a form of deep sleep with consciousness and that is samadhi and it can be achieved with chanting Om.
It is important to chant with meaning and feeling. Having devotion with philosophy will transform you. By chanting Om you remove all distractions and all of your bodies are affected (physical, mental, emotional, astral etc). Visualize the symbol of OM between your eyebrows (at the ajna chakra) and repeat OM mentally or out loud. Feel you are light, absolute consciousness and unchanging. Chant Om every hour and every day, let your mind be absorbed in it. OMMMMM
A: creation- Brahma
U: interaction – Vishnu
M: Matter- Shiva