UPSC aspirants can practice general knowledge proactively by engaging with various mediums like newspapers, current affairs magazines, and online quizzes. Using apps that curate daily news summaries helps in staying updated without being overwhelmed. Joining discussion groups allows for sharing insights and clarifying doubts, promoting deeper understanding. Regularly participating in mock tests, particularly focusing on general studies and current affairs, can help in tracking progress. Furthermore, creating flashcards for important facts and events can enhance memory retention, making it easier to recall information during the exam.