Improving clarity of thought in essays for UPSC exams requires structured thinking and organization. Candidates should outline their essays before writing, ensuring that each point is logically connected and supports the central argument. Using subheadings can help demarcate different sections, making essays easier to navigate. Employing clear and concise language minimizes confusion and enhances readability. Practicing essay writing regularly will also help students develop a unique writing style, allowing them to express ideas more effectively. Lastly, reviewing and revising drafts can greatly enhance coherence and improve overall quality.