It sounds like you are in the process of going somewhere and I don't mean on the train. I mean with your work and school. Why did you buy the tickets if you knew that you might have to work and that you need to study? You are working on a project and I think that the vacation comes after the semester. Can you get your money back on the tickets? Was there something special that you were going to do? If so maybe you should of asked for the days off in advance.
If you can't get the time off and go on the trip anyway, you know that you will lose your job most likely. So I guess that is up to you. Do you have other means of support? Can you afford to lose this job? If not, I suggest you get a refund on the tickets. If you lose your job you will probably become even more depressed. Was this an impulse? These are the only options that I can come up with. Let me know what you decide.
If you are getting burnt out, maybe you can cut back on some hours or a class to lighten up the load.
fibromyalgia, Chronic fatigue, depression,allergies