Indeed. Especially since for me, my depression if indeed I have any is fairly... mild. I've had professional help for anxiety and low-level social phobia, which is great. Brilliant. Spiffing. But it's hard to describe the sort of... greyish bleak that just gets into everything sometimes. Hard to describe and hard to treat, and MOSTLY, by treating the other things, it goes away. Leaves me with only the vague feeling that it might've been there. :s

ANYWAY. Point is, yes. Hard to verbalise. Hard to identify. Generally hard.