A good study plan for UPSC aspirants should feature a clear timeline, outlining daily, weekly, and monthly goals. It should include a mix of theory and practice, allocating time for reading, revision, and mock tests. Flexibility is essential to adjust for unexpected challenges or learning needs. A well-balanced plan includes regular breaks and self-assessment opportunities, nurturing motivation and preventing burnout. Incorporating current affairs and optional subjects into the study schedule maintains relevance and depth in preparation.