Hello Prateek.

First of all, don't get tensed. Everything will be alright. 70% is a good score. May be this time you weren't lucky enough or you should have worked more harder. Take this as a lesson and work with great passion towards your work. You'll be alright. And never ever compare yourself with your friends or someone else. This is your life, you have all rights to experiment with it whenever you want and however you want.

So, be confident and work work and work.

Thank you.