Successful UPSC essays typically exhibit clear structure and logical flow. An effective essay contains a compelling introduction, a well-developed body with arguments supported by data or examples, and a conclusive summary. Strong essays address the topic comprehensively while reflecting critical analysis and personal insight. Additionally, the use of concise language, proper formatting, and adherence to the word limit are essential characteristics. Good essays often incorporate current affairs and relevant case studies, enriching the content and demonstrating the candidate's depth of understanding.