When preparing for the Integrity paper in UPSC Mains, aspirants should focus on understanding the core principles of ethics, integrity, and accountability. Grasping the significance of moral values in public administration is crucial, alongside studying various theories and frameworks that govern ethical behavior. Analyzing real-life scenarios and case studies helps in recognizing ethical dilemmas and formulating appropriate responses. Regularly revisiting the syllabus and practicing previous year questions can enhance comfort and familiarity with typical questions. Engaging in discussions on ethical challenges faced by civil servants provides practical insights and nurtures a more nuanced understanding of integrity.