Acharya Prashant explains the nature of spiritual progress by using a mathematical analogy of superimposing two curves. He describes the life of a person identified solely with the body as following the curve of a sine wave, where one is trapped in a cycle of highs and lows, or dualities like hope and tragedy, without ever truly rising. This state is governed by Nature, where things constantly change but nothing substantial happens, as the movement is predetermined and confined within limits. He notes that even bodily functions and illnesses follow this cyclical pattern of deterioration and revival, keeping the individual gripped but stagnant. To transcend this, Acharya Prashant introduces the curve of consciousness, which represents the human desire to rise beyond mere physical existence. Since human consciousness is dependent on the body and brain, it cannot be entirely separated from physical reality. Therefore, a meaningful life must be the sum of both curves: the cyclical nature of the body and the upward trajectory of consciousness. In this state, while the ups and downs of the body continue, the overall movement is upward. He emphasizes that even the 'lows' in such a journey are progressively higher than previous ones. The goal is to ensure that the curve of consciousness is steep enough to override the limitations of the body through determination and intent.