They should be realistic and attainable. Put those goals in writing and place where they can been seen every day. It also helps to jot down strategies for reaching each goal. For example, if your goal is to make a grade of B on the next statistics test, a good strategy might include going for extra help between classes. Asking a teacher for some suggestions on how to reach your goal may make a difference in your study habits.
Many colleges have graduate students available to assist students in course work.
Make use of all the study aids available on your campus. Finally, reward yourself when you reach a goal, no matter how small. Survival in the classroom is also affected by your note-taking skills. Many professors teach exclusively by lecture and class notes are the only record of what was said in class. Sitting in the front of the room near the lecturer enables you to focus better and avoid distractions within the room.