I'm terrified to go into work tomorrow and I have no real reason to be.
Is there something going on at work tomorrow or you're just generally nervous?
The job makes me nervous, I always think about quitting my job.
If you dread going to work, you should start looking for another job. However, shouldn't quit your job until you have something else lined up, if possible.
I'm thinking of giving the manager a black eye, but I need the money.
If your boss has done something bad against you, going to the authorities or your HR department is the way to go instead of you thinking of giving them a black eye and causing violence against him. They can press charges and put you in jail if you do that.