The impact of UPSC coaching on a candidate's chances of success can be significant, often providing structured guidance and expertise on navigating the syllabus effectively. Coaching institutes offer specialized training, access to experienced faculty, and resources like study materials and mock tests. However, coaching is not mandatory; self-study can also lead to success if approached diligently. Ultimately, the effectiveness of coaching depends on the individual's commitment, practice, and ability to adapt lessons learned to their personal study style.