How do mantras fill positivity in life?

Generally every mantram starts with Om syllable. This is considered as the primordial sound from which everything took birth. It is also believed that sound is divine and it drives whole universe. There are different kinds of mantras mentioned in vedic and tantric texts of ancient India. Hinduism gave equal prominence to vedic and tantric mantras. Vedic mantras start with Om and end with the name of particular god or goddess. But tantric mantras contain powerful beejaaksharas or seed syllables. Seed syllables when chanted in perfect amalgamations, generate powerful energy fields which protects the one who chants them. Particular deities are bounded to some bijaksharas. By chanting them the deity’s blessings will shower on the worshiper.