Healing / maha mtryunjaya

"This powerful mantra of Shiva the Rudra
removes physical, mental, and celestial
ailments.  Like Gayatri, this is an all-
purpose mantra and is commonly prescribed
by astrologers, vaidyas (medicine men),
and Tantrics.  Japa of 125,00 times
removes the fear of death, even if the
condition of the ailing person is so severe
that the doctors become helpless and no
medicine works.  After japa, homa should
be done with 12,500 repetitions of the mantra
and an offering of black sesame seeds with
each.
Mahamrityunjaya is a name of Shiva, the Lord
of Destruction.  As Mahakala he is Lord of
Death.  Meditation on the Shiva with four
arms is necessary.  In his Mahamrityunjaya
form, Shiva is sitting in a pond.  Two of
his arms are holding water pots, from which
he is pouring water over his head.  His third
hand on the right side is doing a mala, and in
his fourth hand on the left side he has another
water pot, from which water is constantly
issuing.  Sometimes one of his right hands is
shown in a blessing mudra (gesture).
Mahamrityunjaya Mantra is supposed to give
victory over death, suffering, and disease. It
removes obstacles, creates a suitable environment,
and bring happiness to life."
Tools for Tantra p. 43, Harish Johari

"Mahamrityunjaya Mantra (maha-mrityun-jaya) is one of the more potent of the
ancient Sanskrit mantras. Maha mrityunjaya is a call for enlightenment and is
a practice of purifying the karmas of the soul at a deep level. It is also
said to be quite beneficial for mental, emotional, and physical health. It is
said that whoever recites this mantra everyday will not die an early death."
http://www.answers.com/topic/mahamrityunjaya

Mantra: 
Aum Tryambakam Yajamahe
Sugandhim Pushtivardhanam
Urvarukamiva Bandhanan
Mrityor Mukshiya Maamritat

Meaning:
I worship the fragrant three-eyed god,
Lord Shiva, who nourishes all beings.
May he liberate us from death for
the sake of immortality, even as the
cucumber is severed from its bondage
to the creeper.