What should I do?

I’ve been working at my current job for two months now. I came in with a lot of related experience, but have had a lot of trouble adapting recently. I believe my manager is disappointed in me for messing up (which happens surprisingly often). This adds extra stress to my job, and I’m tempted to quit and focus on school.

I just stayed up the entire night working on a school project, and I’ve still got hours of school work to go. However, I start a shift at work at noon, and probably won’t get it all done in time (even without taking the nap that I so desire). Should I call in sick?

I am a hard worker, and I don’t want to leave my coworkers high and dry. But I have a feeling I’ll be useless today due to my exhaustion and distraction, and I’ll just antagonize my boss even more.

I love the work I do – it’s already a hobby/passion of mine. But the stress of living up to my boss’ expectations (plus the stress of the job itself, which is only going to increase as the Christmas season progresses) is taking its toll. While I need the cash, my parents would be able to help me out for a while. Hence, part two of this question… Should I quit my job?