When I remember my dreams, I am often shocked by how negative they are. It's no wonder that I wake up sometimes feeling depressed if I had dreams like that all night.
In my case, I always dream about going back to college at my current age to finish learning those things that I should have learned but did not learn. I'm usually wandering around the campus lost. Everybody else is young and sharp and I am old and dull. People treat me like I'm in the way. In one version of this dream, the college was a cemetery and the dorm rooms were crypts.
I had a hard time graduating from college. It took me 6 years instead of 4, and I had to withdraw twice for a break. I just barely managed to finish, because I was so depressed. The last two years, I took the easiest classes I could find so that I could meet the minimal requirements and graduate and hopefully find a job. I had wanted to learn all about math and science, but I didn't.
I've been dreaming that depressing dream for 25 years (including last night)