A mentor or guide plays a crucial role in UPSC preparation by providing direction and clarity throughout the study process. They facilitate the identification of strengths and weaknesses, offering tailored strategies to enhance performance. Experienced mentors can share valuable insights regarding examination patterns, syllabus, and effective study techniques. Having a mentor fosters accountability, motivating aspirants to stay committed to their schedules. Additionally, they can provide emotional support during challenging times, making the entire journey more manageable and less isolating.