To develop critical thinking skills for the UPSC Mains, aspirants should engage in regular reading of diverse topics, including economics, politics, and social issues. Analyzing case studies and current affairs can enhance their ability to evaluate situations from multiple perspectives. Practicing answer writing with a focus on structure and clarity encourages logical articulation of thoughts. Additionally, participating in discussions and debates stimulates analytical thinking and helps in formulating coherent arguments—vital for Mains examination responses.