Our entire subtle system is governed by three primary vertical channels of energy (called "Nadis" in Sanskrit) and by seven main chakras.
Our subtle system is fully activated only with the awakening of the Kundalini, which cleans and balances the entire system and enlightens the pure qualities of the chakras within us. You can understand the function and spiritual manifestation of the energy channels here...
Left channel (ida nadi)
The left channel (moon channel) corresponds to our past, emotions and desires. Its pure state represents the qualities of deep joy, love, compassion, music and art. However, we are prone to left side problems such as emotional attachments, depression, low self esteem and feelings of guilt.
Right channel (pingala nadi)
The right channel (sun channel) corresponds to our actions and planning. However, we are prone to right side problems such as egoistic behaviour (selfishness), arrogance, pride, anger (violence) and hatred.
Central channel (sushumna nadi)
The Central Channel is the balance of the other two channels. The central channel is the channel of ascent, it is the power which sustains our evolution and guides us, consciously or unconsciously, towards the higher awareness of the Sahasrara (seventh chakra). Daily meditation leads to a cooling of the sun channel and a warming of the moon channel, which restores the inner balance of our emotional, mental & physical beings.
Kundalini is the power of pure desire within us, a motherly and soothing spiritual energy which lies dormant at the base of the spine in the sacrum bone (the ancient civilizations knew that in this bone resides a sacred energy).
Self Realization is the awakening of the Kundalini through the central channel, piercing through the six chakras above the sacrum bone and emerging at the top of the head (fontanelle bone area) as a gentle "fountain" of coolness. The word fontanelle itself means "little fountain" which shows again the ancient knowledge about this phenomenon of Self Realization.
In Shri Mataji's own words, "Self Realization is the first encounter with Reality". "We have the Mother within ourselves, in our hearts, and if She is awakened, She is going to look after us. She is going to give all the protection that is needed. And there is nothing to be frightened of anything."
"Kundalini cures you, she improves you, she bestows all the blissful things upon you. She takes you away from the worries of the grosser level", says Shri Mataji.