So, you're back for another semester of fun and games?
You've got a handle on everything by now, surely? You've done the whole sorting-out-lectures-researching-assignments-sittings-exams thing and now you know what to expect for this coming semester?
Well, there's good news and bad news. The good news is - you're kind of right. You do know what to expect from university/college life, which gives you a great advantage. The bad news is - every semester, the expectations get higher.
Knowing what you're doing is only half the battle won. If you really want to get ahead in this game, you have to know how to do it well.
So, let me ask you: what were your weakest points last semester? Was it your writing? Your research? Your attendance at lectures?
If you think your writing could be stronger, you should find out if there are any workshops run by learning advisers to help you with that. If you think your research let you down last semester, then get thee to a library and see what the librarians are offering by way of training and support. If it was attending lectures, I'm afraid you'll have to sort yourself out for that.
Try to look at this semester as a chance to "beat your Personal Best". Go a little bit further, try a little bit harder, aim a little bit higher... but don't kill yourself. If there is one piece of advice I can give you for this semester, it's to make sure you get a good night's sleep. It's amazing what that can do for your performance.