Remembering how bad highschool was usually does it for me
I'm a graduate student, finishing up this year (so that,s about 6 years of college) and I understand what you mean when you say you're burned out and tired. Still as someone had said, sometimes the only motivation to get out of bed in the morning is the knowledge that one day you won't have to do it anymore.
Unlike highschool where you were forced to attend, now more or less you do it because you have decided on having a better life.
60 Credits are already behind you and just now you're starting the classes related to your major: the thing you applied for in the first place.
I guess it helps when you don't look at college in terms of an artificial academic environment; you live on your own, you learn to be more patient with others (roommates!!) and in the end, all of you are getting grilled there, so there's comfort to be found in that.
Get 2 weeks off doing nothing and you'll start feeling bad and won't be able to wait to go back to being productive.
And last but not least; college is important but it's not the end of the world. Knowing that you've already achieved a lot and that even if something happens and you quit you still would have learned a lot makes it seem less intimidating and motivates you to stick in there and get as much out of it as you can.
And when your big exam is just on the next day remind yourself that in just two days tomorrow will be yesterday