Set aside your feelings and realize that a world exists that is purely, or almost purely, in your head in the form of immaterial ideas, ideas like pure concepts and thoughts, such as those _about_ things. Yes, they can be in the form of images, and yes, they can be more or less clear. And they can be accepted or rejected or shaped in different ways--by thinking and considering, often with the help of others living and dead.
Fellow students and teachers will discuss with you what you are trying to understand or learn _about_. And writers will talk to you about these things also, because all is not in the repertoire of each student or teacher. The world of knowledge is greater than any one person.
So, there are these things--ideas--which are the stuff, the major amount of stuff, in college. Yes, college is about other things, but in the main teachers and students entertain and work with ideas, and they do so regardless of how they feel about them. Set your feelings also aside so that you too can see clearly what they are. Don't feel that you have mastered something because you have had the introduction. There is always more to know of the things themselves and about them.
Next, realize that all the cognitive content (the ideas) of what you and your fellow students and the teachers work with is not you. An idea is not yours until you decide to embrace it, that is you make it yours and with some level of feeling you own it and you represent it as how you as a unique and individual person think and will act. But because the content is not yours at the beginning, or not yet yours, you do not need to defend or justify it except on its own terms, using your head not your heart. It is separate and apart. It does not have to be about you.
Beware when answering questions such as, "What do you think about that?" This question is often answered by likes and dislikes and feelings. Which is not the answer to the question! Pay attention to the exact, specific questions before stepping into the quicksand.
When you write something or present something to a teacher or a class, you are giving evidence of your understanding of a _what_--an idea or set of ideas. What you have written or presented can thus stand outside of you as an understanding. That understanding and the way in which it is presented can be judged as good, better, best, or not good or relevant--and these according to faithfulness to the original idea or ideas and according to the correctness and effectiveness of presentation, because in this area too, there are ideas and practices (acts) for which there are accepted ways. So once you have externalized what you think in a way that can be good, better, and so forth, in communicating, all these things take on that immaterial character of ideas also and can be talked about without much if any emotion.
College is about learning the ideas and how to communicate them in ways that are understandable and actionable. Failure to be able to show evidence of your understanding by either expression or the content of expression is failure to learn one of the most important skills college has to offer.
Be aware that many if not most students do not truly learn these things in three or more years of college study. It takes a lifetime of practice to separate ideas from feelings and to combine them when the situation properly calls for an integrated response. Some people never get it. Imagine an idea half-baked, or eloquence without substance.
Next, try and then find your preferred approaches to studying and taking exams. This too is a content area with information, knowledge, and practice that have worked for others. Survey what others have said to do and experiment until you are comfortable with your approaches, and employ them if they work. Do not lose time at the beginning by ignoring this. Half or more of a term can pass by floundering around before you settle in. The earlier you settle in, the better. With practice you will refine your study and preparation skills.
Not lastly, listen carefully. Read carefully. Reflect without regret. Respond not too carefully. There is much to gain from others in college, and you are someone who can learn from others as well as from how you yourself perform.