Acharya Prashant addresses the conflict between the need for positive thinking and the pursuit of understanding. He explains that positive thinking is fundamentally linked to desire. When a person has a desire that is not being fulfilled, they experience pain and despair. To maintain courage for the future, they then resort to positive thinking, an optimistic outlook, or a hopeful mind. Instead of focusing on positive thinking to fulfill a desire, the speaker urges one to first question the origin of that desire. He states that we are not born with our desires; they arise over time. The question of positive thinking comes later; the primary question is, where do our desires come from? Most of our desires are not our own but are externally imposed through social influences, advertising, and peer pressure. They are like viruses that enter an unguarded mind. Because these desires are not genuinely ours, they lack a deep connection to our inner truth or heart. This lack of a genuine connection is why enthusiasm fades when we face obstacles, leading to the need for external motivation like positive thinking. The work we pursue, driven by such desires, has no real, heartfelt connection to us. In contrast, when one's actions stem from a true calling, the enthusiasm does not die, and there is no need for positive thinking. The speaker differentiates between two types of motivation: one driven by the potential rewards of success, and a truer motivation that comes from the inherent importance of the work itself, regardless of the outcome. Ultimately, the solution is to live for a right and meaningful purpose. The speaker uses the example of a person with a terminal illness, who would only want to extend their life if they had an essential purpose to fulfill. Simply living for the sake of living is meaningless. When you live for a right purpose that comes from your heart, you become resolute and are compelled by the work itself. In such a state, you will not need positive thinking because you will be a true warrior, fighting because the fight itself is magnificent, not for the results.