By controlling the senses, one renounces lust, anger, fear, cupidity, enmity, and falsehood, which are cternal and, therefore, highly difficult to renounce.
कामं क्रोध भयं लोभमभिद्रोहमथानृतम्। इन्द्रियाणां निरोधेन सतस्त्यजति दुस्त्यजान्॥