I think you're right
Where I'm personally coming from with the question: general feelings of malaise that ebb and flow (work, family, etc.). Good thing is that something usually positive happens that can brighten my spirits. For example, coming to VU to hang out, vent, etc. Bad thing is that the itch you can't scratch ("why can't thing be better?") finds a way to creep back. Only scratching the surface with this, but probably enough for now.
Skip to the end: I think I fall in to being a borderline "something" or having borderline "somethings." And as
@Huckleberried said, it can be a bitch to figure out!