Acharya Prashant explains that practice is indeed useful and aligns with the teachings of Shri Krishna in the Bhagavad Gita. He validates the practice of paying little attention to selfish motives and not taking oneself seriously. He emphasizes that since one is intimately aware of their own base desires and flaws, it is a great spiritual practice to treat oneself casually and avoid the delusion of self-importance. This practice serves as a necessary resistance against the constant societal pressure to value the ego.