We're in college so we all know that sleep is the first thing to disappear off the priority list but that should definitely change in the new year. More restful sleep can mean better energy, better cognitive functioning, healthier immune system, basically everything good.
First off, download a sleep cycle app to track your sleep and find out how many hours you need each night to feel rested then don't scrimp on that. Everyone needs a different amount of sleep so it's important to find what works for you. Make up a bedtime routine so that you can tell your body it's time for bed at roughly the same time each night. If possible, make sure you're off your electronics at least an hour before you go to sleep. Their lights signal to your brain it's time to stay awake, that's why you end up watching way more Netflix than you thought you would.
It's also a great idea to get a workout in during the day. It'll help you sleep more soundly at night and while your body may wake up a little sore, your brain will be ready to go.
What's really important is making sure you are taking the time you need to rest at the end of the day. You lead a busy life, you deserve a break!