Acharya Prashant explains that in a perfect state, the heart, mind, and body would exist in seamless alignment, but in reality, they are often disconnected. He describes the mind as the subtle expression of the source and the body as the gross expression of the mind. While the shortest path to realization involves observing the mind's tendencies directly, most people live at a gross level where the mind is incapable of self-reflection and remains busy looking at external objects. This leads to conditioning, where the mind's state becomes heavily dependent on the condition of the body and external sensory inputs.