Using previous years' papers is a vital strategy for UPSC exam preparation. Analyzing these papers allows candidates to understand the exam’s pattern, question types, and marking schemes. It highlights frequently asked topics and helps in identifying important areas to focus on during study sessions. Additionally, practicing with these papers enhances time management skills, preparing aspirants for the pressure of the actual exam. Moreover, reviewing past papers fosters familiarity with the examination's format, ultimately boosting confidence and reducing anxiety leading into the exam day.