There is as such no success mantra in coaching centres they only guide you.

Scoring good marks in your exam totally depends on you and your hard work. 

There are many students who score good marks in their exam without joining coaching center by self study.

In order to crack your exam you need to be dedicated and plan your study in a manner that you complete your syllabus on time and you get proper time for revision. 

It is advisable that you clear all your doubts. Focus on the important topics. 

Refer previous year papers to understand the exam pattern and to know the level of the exam and keep analysing your performance to work on your strength and weakness.

Good luck!!