Candidates should engage critically with their resources during UPSC preparation by analyzing and synthesizing information rather than passively absorbing it. This involves evaluating sources for credibility and relevance, as well as comparing different perspectives on issues. Creating summaries and concept maps can help consolidate knowledge and facilitate deeper understanding. Incorporating practice questions and discussions with peers enhances critical thinking, allowing aspirants to apply learned concepts to real-world scenarios. Moreover, reflective self-assessment is essential for identifying strengths and areas for improvement. By fostering an analytical mindset, candidates can develop the skills necessary to navigate complex problems effectively.