While you are here, which will sometimes feel like forever and sometimes a blink, take a moment to realize that you are building a better you. You are gaining knowledge, acquiring life-skills, and creating patterns that will serve you from here forward. That said, it should behoove you to take some care with it all. This is important business.
Make sure you know your stuff. Ask questions when you don't understand. You're here to gain that understanding. It is your right to know. Demand help (in the nicest way possible of course - alienating people does more harm than good.) Professors should be able to help you understand the concepts, and if it takes more than one kind of approach to learn the material, they should be prepared to offer that. Remember, too, that the Raider Center for Academic Success is also in place to help you achieve your goals. Use it.
In additional to all the technical expertise you're getting, don't forget the "soft" skills that make every relationship and interaction more fulfilling and successful. This is an excellent opportunity to improve/hone your communication and interpersonal talents. Practice civility, patience, and compromise. Endeavor to listen to others as much as you want be heard. If you leave this place and never practice in your major, you will still be able to employ these life lessons.
Lastly, remember that habits formed here and now will be hard to break later on. Poor diet, inactivity, lack of sleep, and indulging excessively in anything will take its toll over time. You're young and it can be comforting to think that they'll be plenty of time to tackle those issues later, but time only makes these ruts deeper and harder to get out of. Think of the most precious person to you. How would you want them treated? You'd want them to have every opportunity to be happy and healthy, right? Extend that same courtesy to yourself because you are someone else's precious person, too.