A mantra is a focal chant which is used similarly to meditation in practice. Ancient practitioners found that using a rhythmic, repeated phrase to free the mind allowed for a form of self-hypnosis, which then facilitated planting subconscious positive suggestions or images (causes) which could lead to actualizing desired behaviors or results(effects). This relates to the concept of causality, which is found in many Buddhist teachings. I am convinced that your mantra can be something as simple as "PEA-nut-BUT-ter", repeated while focusing on a mandala, or focal object, like a poster of the Buddha, or any other pleasing image. Basically, chanting is a form of conscious and intentional brain manipulation. Nichiren Buddhists use the mantra, "Nam myoho renge kyo," for example, a reference to dedication to the Lotus Sutra. Tibetans use the mantra, "Om mai ne pad me hung". I am convinced from my own practice that the specific sounds of the mantra carry less magic than the practice of chanting them with a mandala in a peaceful and relaxed atmosphere. The ancients tended to assign the mantra's magic to the creator of the mantra or to the mandala to which the mantra is chanted. But the ancients were unfamiliar with hypnosis and brain science. The means is less important than the end in this case. The end being the inducement of the brain to accept and foster the concepts of creating personal happiness and practicing peace and compassion.
