Go to class. Woody Allen said that 50 percent of success is showing up. If you have difficulty with a class, continue to attend.
Research shows that class absences and failure are closely related.
Talk to your teacher. If you experience difficulty in a class, your teacher may help you identify the problem. Take classes that interest you. Students usually perform better in classes that they are interested in, regardless of when the classes are scheduled. Give yourself enough time to do well.