Aspirants can engage in cognitive restructuring to overcome mental barriers during UPSC preparation by reframing negative thoughts and adopting a more positive mindset. Techniques such as thought journaling help identify harmful beliefs and replace them with constructive affirmations. Practicing mindfulness can also enhance self-awareness and reduce anxiety, enabling candidates to manage stress effectively. Furthermore, setting achievable goals fosters a sense of accomplishment, motivating them onward. By cultivating resilience through cognitive restructuring, candidates can enhance their preparation experience and maintain focus on their objectives.