There are different types of mantras. Some called Bija (Seed) mantra. They have no exact meaning but act directly on the nerves of astral body. The other type of mantras, having a combination of words, and having some meaning also set up powerful vibrations in the body.
Most common, however is the deity mantras, in which a specific form with attributes is visualized along with the repetition of the sound.
Initiation - If possible, before attempting Japa one should seek out a guru and receive mantra initiation from him. Only those who are themselves pure can give initiation to others. Therefore it is important to find a qualified guru to successfully implant the mantras in the disciples body. If no guru can be found, one may select any mantra that seems appropriate to fulfil his desires, assuming Lord Shiva as his guru and start repeating it with mentally with faith and devotion everyday.
The efficiency of the japa is accentuated according to the degree of concentration. The mind should be fixed on the source or the related YANTRA (please see yantra section for details). Then only you will realize the maximum benefit of a mantra.
“Om Bhur Bhuvah Swah, Tat Savitur Varenyam.
Bhargo Devasya Dheemahi, Dhiyo Yo Nah Prachodayat.”
Gayatri Mantra is the supreme mantra of the vedas. Gayatri is the mother of universe, the shakti itself. There is nothing she cannot do. Her mantra purifies the mind, destroys pain, sin and ignorance, brings liberation, and bestows health, beauty, strength, vitality, power intelligence and magnetic aura. Modern system of treatment is bereft of religion. Anybody who enchants the gayatri mantra everyday can never be affected by diseases. Mahatma Gandhi believed that It protects both your body as well as soul.
“Om Sri Maha Ganapataye Namah”
The mantra of elephant headed God. A remover of obstacles and bestower of success. It is the mantra adopted by famous astrologer Bejan Daruwala.
“Om Namah Sivaya”
It is the mantra of Lord Shiva. Many people have become multi-millioner from penniless by enchanting this mantra. Lord Shiva is very innocent God and bestows his blessings immediately on the devotee.
“Om Namo Bhagavate Vasudevaya”
The mantra of Lord Vishnu. Any thing in the world is possible by worshipping lord Vishnu, who sustains the life in world. Enchanting this mantra saves you from many types of troubles. It bestows the devotee with prosperity, peace, wealth etc.
“Om Sri Ramaya Namah”
The description of word RAMA is unlimited. Lord Rama is the incarnation of Vishnu. The influence of Rama is spread all over Asia in one or the other way. One can gain a lot in all fields of his life by enchanting this mantra.
“Om Sri Durgaya Namah”
This mantra is of Goddess Durga the combined form of the powers of Lakshmi, Saraswati and kali. By enchanting this mantra all the physical, mental, economic problems are solved.
“Om Sri Maha Lakshmyai Namah”
The mantra of Goddess Lakshmi, the goddess of all the wealth and prosperity in the world.
“Om Aim Saraswatyai Namah”
Godess Saraswati bestows the devotee with the memory, Knowledge and the power of speech.
“Om Kleem Krishnaya Namah”
The mantra of lord Krishna, the incarnation of Lord Vishnu. Solves all the problems of devotee and bestows him with wealth and prosperity.
“Om Tryambakam Yajamahe Sugandhim
Pushtivardhanam Urvarukamiva Bandhanan Mrityor Mukshiya Mamritat”
This Mahamritunjaya Mantra of Shiva, is to protect and cure the persons from diseases, fear of death.
“Soham” - I am That I am
“Aham Brahma Asmi ” - I am Brahman
“OM” - It consist of three letters A, U and M. it signifies three periods of time, the three states of consciousness and all existence. A devotee can feel its effect very soon by including it in his daily routine of japa.
Bija Mantra, Mystic seed letters
Out of 11 bija mantra some are given below
“Kreeem” - This is the bija mantra of Kalika and Krishna
“Shreem” - The mantra of Maha Lakshmi, Wealth, satisfaction and dispeller of sorrows
“Aim ” - This is the mantra of Saraswati, the goddess of Knowledge.
“Kleem ” - This mantra relates to the lord of desires, also to lord Krishna.
The science of mantras is very complex. There are many mantras for specific purposes like Shabar Mantras, which give immediate result and don’t need any special techniques for their use.