Candidates should adopt best practices while preparing for the essays in the UPSC civil services exam by reading diverse sources to gather information and viewpoints. Structuring essays with a clear introduction, body, and conclusion ensures coherence. Practicing timed writing will enhance their ability to articulate thoughts efficiently. Using examples, data, and case studies makes arguments more compelling, while staying abreast of current affairs allows for the inclusion of relevant content. Finally, consistent feedback from mentors or peers helps refine writing skills and develop confidence.