College is not like high school. Write them down, and work out how to accomplish them. Review them periodically and see how you're doing. Dwell on your successes and not your failures. By all means try to understand why you don't do well in all things, but focus on what you're good at - and feel good about yourself.
Unrealistic expectations lead to anger, and false hope leads to disappointment.
Don't expect too much from faculty, staff, campus facilities, etc. Don't allow your perception of their inadequacies to get in your way. You are in control of your college life, regardless of what others demand of you. Be flexible and adaptable. Remember, motivation comes in degrees.