I was supercharged up during the holidays. Couldn't wait to get
back into studying. 2 weeks after the semester started, I couldn't
wait for them to end.
At the end of the day, it boils down to the lecturers and whether
you have interest in what you are learning.
If the lecturers are crap but you like what you are learning, you
can always self-learn and still do well.
If you have no interest at all but the lecturers are super
dedicated, they may spur you to study and do well.
If you have none, just dig in and see out the semester like
me...
But don't give yourself too much pressure. Afterall, it's only a
piece of paper you're collecting at the end of the day. Getting a
good job goes way beyond that...