Tapasya means voluntary acceptance of bodily pains to achieve some higher end of life. Raavana and Hiranyakasipu underwent a severe type of bodily torture to achieve the end of sense gratification. Sometimes modern politicians also undergo severe types of austerities to achieve some political end. This is not actually tapasya. One should accept voluntary bodily inconvenience for the sake of knowing Vaasudeva because that is the way of real austerities. Otherwise all forms of austerities are classified as modes of passion and ignorance. Passion and ignorance cannot end the miseries of life. Only the mode of goodness can mitigate the threefold-miseries of life.
