I hope it's ok for me to post here, since I don't have depression and I'm not asking about someone that does. When I was in therapy my therapist ruled it out - something to do with my mood being "reactive" - I'll feel happy if something good happens. Doesn't always last long, though, and it's not lasting long today.
I've been feeling like hell since last night - see
this post for why.

I'm fairly sure I've probably blown things out of all proportion, but ever since then it's been a real effort to make myself do anything; I've been feeling tired even though I got a lot of sleep last night; I've been feeling lonely, yet not wanting to see anyone (I almost wanted to cancel meeting my sister for lunch today...I'm glad I didn't, because it made me feel better for a while, but it didn't last

); I've been feeling unhappy; and I've been blaming myself for not making more of an effort to be sociable. It's no wonder I'm a failure as a friend, really.
I don't know if it's possible to feel depressed if you don't actually have depression, but I took the depression test basing my answers on how I've been feeling last night and today and ended up with a score of 24.
Is there any way to help myself "snap out" of this? I don't like it.
(Again, feel free to delete/move this if it shouldn't be here.)