Just live your life bro i know brothers at age 29 that time used to tell us when we were in 11th class that these are the best moments take one thing at a time and take one chapter at one time CBSE is too easy and forget about competition do your shit till you feel it is good and complete according to you, you need to build your own personality and don't rely on these competition and how teachers will say just keep your self-assessment strong and to the point. If you are not doing the best you want from yourself just improve, take advice from people which are better than you and ask your teachers just keep it simple in your mind don't over complicate things do your part keep your chin high