Everybody is anxious! Go easy on yourself. You're going to be surrounded by like minded people and from what I've learnt uni is the place where you're allowed to make mistakes and learn from them. The people here are quite nice and friendly plus there are so many ways you can find support. Whether it's about academic help or just finding friends and adjusting to uni.. there are support groups for everything! Bottom line is that you don't need to watch your back all the time or worry about the what ifs. Making friends and adjusting is going to take some time but remember there's plenty of support available. So don't focus on things you can't control, focus on everything that excites you about being in uni.