The definition of mantra is "that which protects the mind." That which protects the mind from negativity, or that which protects you from your own mind, is called mantra.
Sogyal RinpocheAbove all, be at ease, be as natural and spacious as possible. Slip quietly out of the noose of your habitual anxious self, release all grasping, and relax into your true nature.
Sogyal RinpocheGenerally we waste our lives, distracted from our true selves, in endless activity. Meditation is the way to bring us back to ourselves, where we can really experience and taste our full being.
Sogyal Rinpoche