1. Back Yourself.
Firstly, you are good enough to be here. You have put in so much hard work up to this point to gain a place on your degree, so you deserve to be here. Never forget that. It may seem scary to think about exams, coursework and lectures, but you have proven yourself to be academically capable to go to university; you can do this.
It is so easy to compare yourself to others around you, but try not to. You are an individual, unique and amazing person, so just be you.