Candidates preparing for UPSC face several challenges, including mastering a vast syllabus, managing time effectively, and staying motivated throughout the extensive preparation period. The exam's unpredictable nature requires aspirants to grasp diverse subjects, ranging from history to politics and environmental science. Furthermore, candidates often struggle with current affairs, requiring constant updates and thorough understanding. Stress and burnout are also common, necessitating effective stress management strategies. Overall, candidates need to build a resilient approach to successfully navigate these challenges.