Effective study habits that can support UPSC candidates through challenges include setting realistic goals, maintaining a consistent study schedule, and utilizing active learning techniques. Regular short breaks during study sessions help improve retention and prevent burnout. Creating revision materials like mind maps and flashcards can enhance memory recall during complex topics. Engaging in peer discussions and practice sessions fosters collaborative learning, while self-reflective practices allow candidates to evaluate their progress and identify areas for improvement, ultimately leading to a more efficient study regimen.