Hi Kayla!
I too am a college student, so I know where you're coming from! It can be hard navigating the dining halls and controlling the stress from school, but it can be done. It just takes commitment. You need to put your health first and, while it may involve some sacrifices, it will be worth it!
I'm naturally a morning person, so it's easy for me to wake up early and workout. But if you're not, think about how much energy your workout will give you for the day. Think about the great feeling you get once you're done. I like to workout in the morning because then it's "out of the way" and I can focus on schoolwork and still make time for social events.
As for nutrition, I stick to lean proteins, healthy fats, fruits, veggies, and whole grains. Some good snacks that I like are hummus and veggies, banana or apple with nut butter, avocado on Ezekial toast, 1/2 grapefruit and cottage cheese, or tuna and whole-wheat crackers. I also LOVE Shakeology, which makes for a quick, healthy snack.
I'm currently studying nutrition in school, so if you have any other questions, I'd be happy to answer them!

I also have a thread for college students going here: http://www.teambeachbody.com/connect/message-boards/-/message_boards/message/228774608 in which I have tips for staying healthy in college. Would love to see you there!