In A Funk

Ugh... why am I in such a funk today? It's like my heart has declared war on the rest of me, and my head can't muster the resources to fight back. I had to run away from people at church this morning, just to keep from saying things to them that I know I'd regret. Probably offended some people, made them feel like I was blowing them off, but honestly it was damage control. When I get in these moods, I'm not fit for human companionship- I can't trust myself to be myself. Or maybe I'm a little too "myself" when I'm like this... makes me feel like some sort of emotional werewolf. Is this normal? Is it spiritual warfare, like some not-so-subtle attack of Satan? Is it some unmet, unreasonable expectation or need on which I just can't seem to put my finger? Stress that I haven't really vented out...? A weird, sideways manifestation of loneliness? Maybe some of each of those. Thank You, Lord, for Your grace in times like these!