Om Asato Ma Sad Gamaya
This Mantra is one of the most beautiful Mantras to me.
When I'm down, or something bad is happening, I keep repeating this Mantra and it always helps me.
It's from the Brhadaranyaka Upanishad, and is about 2500 years old.
These are the Words:
Om Asato Ma Sad Gamaya
Tamaso Ma Jyotir Gamaya
Mrityor Ma Amritam Gamaya
Om Shanti Shanti Shanti
The Meaning is:
Lead me Through the Illusion to the Real
Through the Darkness to the Light
Lead me through Death to Immortality
Om Peace.
A very common translation is
"Lead me from the Illusion to the Real
From the Darkness to the Light
Lead me from Death to Immortality."
I like to say "through" instead of "from" because I feel that many people want to get away "from" Illusion, Darkness or Death.