Yoga practice, the process of purifying ones existential identity, is based mainly on self-control. Without self-control one cannot practice freedom from animosity. In the conditional state, every living being is envious of another living being, but in the liberated state there is an absence of animosity. Prahlada Maharaja was tortured by his father in so many ways, yet after the death of his father he prayed for his fathers liberation by the Supreme Personality of Godhead. He did not ask any benediction that he might have asked, but he prayed that his atheistic father might be liberated. He never cursed any of the persons who engaged in torturing him at the instigation of his father.