Systematic revision can significantly improve performance in the UPSC exam by reinforcing knowledge retention and understanding. Candidates should create a structured revision timetable that allows for periodic review of topics, enhancing long-term memory. Utilizing mnemonics, flashcards, and practice tests can aid in identifying areas needing further focus. Group discussions can also help in clarifying concepts. Active revision techniques, such as teaching back the learned material, can foster greater engagement and ensure comprehensive coverage of the syllabus, ultimately leading to higher confidence on exam day.