If I were a superstitious sort (and I'm not... in spite of my reluctance to get a grocery store card and let them track what I EAT), I'd swear that anxiety is your psyche's way of telling you to get off your arse and do something because long-term depression is just too boring. It's a pity that it's as debilitating and a damned sight more scary.
In case you're wondering, I had another panic attack earlier this evening. I did manage to stave it off (mostly) by hauling myself out of the house to do laundry and have dinner. I ate too much and wish I had accomplished more, but there you have it.
On the upside, I'm very tired, and getting to sleep will be little problem.