Candidates preparing for the UPSC exam often make several common mistakes that can hinder their success. One prevalent error is underestimating the vastness of the syllabus, leading to poor time management. Many candidates also fail to focus on current affairs, which are critical for both prelims and mains. Over-reliance on traditional methods without adapting to evolving exam patterns can be detrimental. Additionally, neglecting to practice answer writing for mains, or not participating in mock interviews, can negatively impact confidence and performance. Developing a well-structured study plan and avoiding these pitfalls is essential for effective preparation.