Anxiety Dreams & Lucidity

I had a variation of my classic anxiety dream. I was attempting to study for a college exam and realizing that I didn't have a prayer. I had not attended the classes, didn't even know when they'd been scheduled or where, had only a partial syllabus (but it indicated that I ought to have been reading 300 (300!) pages a week from a variety of very, very large books.

Then I slowly came to realize that I was dreaming. That I had graduated from college more than 20 years ago, and that I would never, ever have to deal with such things again. Usually I don't realize this until I wake up and conclude that I had been dreaming; this time the realization came to me while I was dreaming. Interesting.

I don't know why I had this dream. I don't think I'm feeling stressed or anxious, but perhaps I am--certainly my subconscious seems to think so.