Capitalism is indestructible. It's like an eternal virus, hardier and far more resilient than we can ever imagine. It'll re-route itself around the roadkill of this week's endless fiscal car crashes. No doubt about that.

But why can't I be indestructible! What a week. I'm exhausted; it feels like the short sellers have done a number on my sleep. I've hardly had any since Monday.

I don't work in Finance; the office is in the City, just it's nothing to do with money. I've been through the wringer this week, all sorts of madness: bollockings, frantic travelling, anxious conference calls.

Tonight it must be: bed, pillow, sleep in that sequence, and uninterrupted for a bare minimum of eight hours. Body needs to repair.