Essential oils and Incense: The incense and essential oils of flowers are pious and have cleansing properties. They enhance the positive environment. Light and burn them regularly to clear off the negative energy forms. Lighting: Darkness is the symbol of dullness, depression and tensions. Once in the evening even for a small time all the lights of house should be switched on. It vanishes the essence of darkness. The last corner and the Northeast corner of the house should always keep lighted.