Preparing for the UPSC (Union Public Service Commission) exam in one year without coaching is indeed possible. While coaching can be helpful, self-study and dedication can also lead to success. Here's a detailed explanation on how to approach UPSC preparation without coaching:

1. Understand the Exam:
Firstly, familiarize yourself with the UPSC exam pattern, syllabus, and marking scheme. The UPSC conducts exams in three stages: Preliminary, Mains, and Interview. Understanding the structure and requirements of each stage will help you plan your preparation effectively.

2. Create a Study Plan:
Develop a study plan that covers the entire UPSC syllabus. Divide the subjects into manageable sections and allocate specific time periods for each. Ensure you have a balanced approach, giving equal importance to all subjects.

3. Collect Study Materials:
Gather relevant study materials such as NCERT books, standard reference books, newspapers, and magazines. EduRev is a platform where you can find a wide range of study materials for UPSC preparation.

4. Subject-wise Preparation:
Focus on each subject individually and dedicate sufficient time to cover the entire syllabus. Make comprehensive notes, highlighting important points and concepts. Regularly revise these notes to reinforce your understanding.

5. Current Affairs:
Stay updated with current affairs by reading newspapers, watching news channels, and referring to magazines like Yojana, Kurukshetra, and Economic and Political Weekly. Make concise notes on important topics and revise them regularly.

6. Practice Previous Year Papers:
Solve previous year question papers to understand the pattern and types of questions asked in the exam. This will familiarize you with the exam format and help you identify your strengths and weaknesses.

7. Mock Tests:
Take regular mock tests to assess your progress and improve time management skills. EduRev offers a variety of mock tests specifically designed for UPSC preparation.

8. Self-Evaluation:
Regularly evaluate your performance and identify areas that need improvement. Work on strengthening your weak areas and seek guidance from online forums and study groups if required.

9. Optional Subject:
If you have chosen an optional subject, allocate sufficient time to master it. Refer to recommended books and solve previous year question papers to gain a thorough understanding.

10. Revision and Self-discipline:
Revision is crucial for retention. Allocate dedicated time for revision and ensure you revise all subjects and notes regularly. Maintain self-discipline and stick to your study plan.

Conclusion:
With a well-structured study plan, diligent self-study, and regular practice, it is possible to prepare for the UPSC exam in one year without coaching. Remember to stay focused, be consistent, and make the best use of available resources like EduRev to enhance your preparation.