Psychological traits beneficial for UPSC aspirants include resilience, discipline, and a growth mindset. Resilience allows candidates to persevere through challenges, while discipline fosters consistent study habits essential for effective preparation. A growth mindset encourages individuals to view setbacks as opportunities for learning, which is crucial given the competitive nature of the UPSC. Additionally, traits such as curiosity and time management skills enhance the learning experience, allowing candidates to remain focused and engaged with the vast syllabus, ultimately aiding them in contributing positively to public service.