One of the most common mistakes is starting UPSC preparation without fully understanding the syllabus and PYQs. Many aspirants spend time collecting books, notes, and strategies instead of building conceptual clarity.

Another mistake is constantly changing plans or sources, which breaks consistency and creates confusion. Ignoring revision and answer writing in the early stages also slows improvement.
Most UPSC preparation problems come from lack of direction rather than lack of effort. When preparation becomes syllabus-based and structured, many of these mistakes naturally reduce.