Treating it as you would existential depression may be useful, I would think. There are not really a lot of effective therapies for philosophy-induced existential depression - the only way to fix it seems to be to increase your baseline happiness, which is as easy to say as it is hard to do - but it occurred to me that university student health therapist may see a lot of it and may at least be able to provide an experienced ear. I would be interested in any anecdotes on the subject (I'm assuming there's not a lot of data).