Acharya Prashant addresses the issue of self-doubt, particularly in the context of competitive exams like the civil services. He explains that self-doubt is a redundant activity that consumes the energy required for preparation. Instead of forecasting results, which is the responsibility of the examining body, one should focus on the effort they can put in today. He emphasizes that total dedication to a task is only possible when there is deep conviction and a valid reason for pursuing that goal. If one has strong logic for their choice, they will naturally work hard without being distracted by uncertainty.