The five letters are the forms of Shiva - Na-gendra (one who wears a garland of snakes), Ma-ndakini Salila (one who is bathed by the water of the Ganges), Shi (the supreme Lord), Va-shishta (one who is praised by the sages like Vashishta), and Ya-ksha (one who takes the form of Yaksha). om, na, mah, shi, va, ya. When chanted properly, each syllable activates certain energy centres within our bodies.

"OM NAMAHA SHIVAYA" ~ My Salutations to Shiva, I Humbly Bow To You!!
The five letters are the forms of Shiva - Na-gendra (one who wears a garland of snakes), Ma-ndakini Salila (one who is bathed by the water of the Ganges), Shi (the supreme Lord), Va-shishta (one who is praised by the sages like Vashishta), and Ya-ksha (one who takes the form of Yaksha). om, na, mah, shi, va, ya. When chanted properly, each syllable activates certain energy centres within our bodies. ‪Om Namah Shivaya is a pathway to unity with Shiva. Constant repetition of a mantra focuses, opens one's heart and mind to God, and stops or reduces the inherent tendency of one's mind to constantly plan, worry, day-dream or otherwise prattle away in really useless activity. It removes the confusion and evil from ones mind. The mind can be purified only by japa. This is the only medicine for the disease of the mind. While your mind and heart are impure, how can God live in your heart? The water-to clean your heart is the Name of God.! It's said that when the great destruction comes to the world, those who believe in and worship God sincerely and especially those who repeat His Name would be saved by the power of the mantra. "God's Names are more powerful weapon to survive. Prayer will be the only safeguard and saviours against destruction. Forget past and future, abolish all other thoughts, but pray with total concentration of mind and soul and have full faith in Shiva! Chant OM NAMAH SHIVAYA and you can even defy death!! Love, light & Peace!!