Writing practice has a profound influence on performance in the UPSC Mains. Regular writing not only enhances clarity of thought but also improves articulation and argument-making skills, both essential for scoring well in the exam. Writing model answers, practicing previous years' questions, and timed writing sessions can simulate exam conditions and boost confidence. Feedback from mentors can help identify areas for improvement. Additionally, competent writing coupled with effective structuring of answers can significantly elevate the quality of responses, leading to a better overall performance in the Mains examination.