Watch the entire course on Unacademy.com here:- https://goo.gl/j9CgIk
Pawan Saini lists out the most common mistakes committed by majority of IES aspirants. In less than 10 minutes, you would know how to improve your preparation manifold. Do not forget to watch the second part.
For more lessons/courses on UPSC CSE Preparation, please visit:- https://unacademy.com/upsc-preparation/