The chanting of mantras or singing of devotional songs to the accompaniment of musical instruments weave a cathartic spell that unburdens a heavy heart. The constant tinkle of bells, the sound of the conch and the musical instruments provide sound therapy that helps focus on the all-powerful reality, the only anchor for the troubled soul.
Candles and diyas are lit in all temples, churches and mosques. Light is believed to have a cleansing effect on our auras and the rotation of the lit aarti thali around the whole body is believed to do just that: light therapy.
Finally, the sprinkling of holy water charged with devotional prayers purifies the mind, whether it is baptism or rituals in temples. The prasad settles as sweetness and subtle peace in the nervous system. These work as hydro therapy and sweet therapy that can elevate the soul.