if i could travel into the future, i doubt i'd be depressed.
That's because you haven't seen the future.
I'm officially daring you to use that exact assessment in a departmental brief.
Depression due to an enviornmental factor isn't pathological. Or, to put it another way, if stuff sucks, expect to feel bad.
Personally, I found sleep is the single best point for intervention. It sounds mad, but before going to sleep try to think about nice things for a bit. Rather than mulling over bad things, burns trauma, ex girlfriends etc. It can be anything, really, from a glass of cool water to a beachball, to the concept of charity.
On topic, I had an argument this week with the editor a leading criminal journal, suggesting they should run a pullout section on kittens.