To master essay writing for UPSC, candidates can follow a structured approach that includes brainstorming ideas, outlining, and practicing regularly. Understanding the essay prompt and identifying key themes ensures focused writing. Candidates should develop a clear thesis statement supported by relevant arguments and examples. Crafting coherent paragraphs with smooth transitions is essential for readability. Studying high-scoring essays from previous candidates provides insights into effective techniques. Regular feedback from mentors or peers facilitates continuous improvement. Ultimately, consistent practice and refinement of writing style lead to mastery of this critical skill.