Visualization:
At my heart is a white moon and the concentration being HRIH [self-respect or conscientiousness]. Surrounding this, standing clockwise on the moon, are the syllables of the long mantra, white in color. Inside this stand the syllables of the six-syllable mantra. Light radiates from these and completely fills my body. All obscurations, diseases, and hindrances are purified. The light radiates outside, carrying a countless number of Great Compassionate Ones. They purify all sentient beings' negative karma, disturbing attitudes, negative emotions, and obscurations.

The light gives sentient beings all the temporal happiness they want. It also ripens their minds so that they receive the realization of the gradual path to enlightenment and attain the ultimate happiness of Buddhahood. All sentient beings become Chenrezig.

Again, light rays radiate from my heart. They carry offerings to all the Buddhas and to all the sentient beings who have become Chenrezig. All these Chenrezigs are extremely pleased and experience bliss. Then all the qualities of Chenrezig's holy body, speech, and mind in the form of white light come from all the Chenrezigs and absorb into my heart, blessing my mind. All the Buddhas and all the sentient beings who have become Chenrezigs fall like snowflakes into me. I feel very blissful and my body, speech, and mind become inseparable from Guru Chenrezig's holy body, speech, and mind.

While doing the above visualizations, recite the long mantra and the six-syllable mantra.

Long mantra in Sanskrit:
NAMO RATNA TRAYAYA / NAMAH ARYA JNANA SAGARA / VAIROCHANA VYUHA RAJAYA / TATHAGATAYA / ARHATE / SAMYAK SAMBUDDHAYA / NAMAH SARVA TATHAGATEBHYAH / ARHATEBHYAH / SAMYAK SAMBUDDHEBHYAH / NAMAH ARYA AVALOKITESHVARAYA / BODHISATTVAYA / MAHASATTVAYA / MAHA KARUNIKAYA / TADYATHA / OM DHARA DHARA / DHIRI DHIRI / DHURU DHURU / ITTE VATTE / CHALE CHALE / PRACHALE PRACHALE / KUSUME KUSUME VARE / ILI MILI / CHITI JVALAM / APANAYE SVAHA

Long mantra as pronounced by Tibetans:
namo ratna trayaya/ nama arya gyana sagara/ berotsana buha radzaya/ tatagataya/ arhate/ samyaksam buddhaya/ namo sarwa tatagatebhye/ arhatebhye/ samyaksam buddhebhye/ namo arya awalokite/ shoraya/ bodhi satoya/ maha satoya/ maha karunikaya/ tayata/ om/ dara dara/ diri diri/ duru duru/ itte wate/ tsale tsale/ partsale partsale/ kusume kusume ware/ ihli mili/ tsiti dzola/ ahpanaye soha

Six-syllable mantra in Sanskrit: OM MANI PADME HUM

Six-syllable mantra as pronounced by Tibetans: om mani pay may hung

Visualize Vajrasattva on your crown. Nectar flows from his heart into you, purifying any incorrect mantra recitations. Recite the following one-hundred-syllable Vajrasattva mantra 3X.

OM PADMASATTVA SAMAYA MANUPALAYA / PADMASATTVA TVENOPATHISHTHA / DRIDHO ME BHAVA / SUTOSHYO MAY BHAVA / SUPOSHYO ME BHAVA / ANURAKTO ME BHAVA / SARVA SIDDHIM ME PRAYACCHA / SARVA KARMA SUCHAME / CHITTAM SHRIYAM KURU HUM / HA HA HA HA HOH / BHAGAVAN /SARVA TATHAGATA / PADMA MAME MUNCHA / PADMA BHAVA MAHA SAMAYA SATTVA AH HUM PHAT

Thubten Chodron in Cultivating a Compassionate Heart