It’s a new semester. A new year. We’ve gone through at least one semester. You know your way around the campus. You know your studying habits. It’s time to make sure you enhance them.
Go see your teachers during their office hours. Go get a tutor for that class that you’re worried about (Tutoring is FREE!!!!!). Make sure you take time for yourself. Exercise, etc.
One last thing: Be Optimistic. If you believe you can do it, then you can!