Acharya Prashant explains the concept of 'Niyat Karma' (prescribed action) as mentioned by Shri Krishna in the Bhagavad Gita. He clarifies that Niyat Karma is not merely following scriptures or fatalism, but rather performing actions that align with one's true nature or 'Niyati'. He defines this true nature as a state of silent bliss and peace, beyond the realm of intellectual knowledge or ego-driven thoughts. Therefore, Niyat Karma is any action that either arises from this inner silence or leads one toward it. He emphasizes that one's true nature is found where the mind becomes quiet and the curiosity to 'know' through the intellect ceases.