[douche]

The tired/fried and not able to think clearly is I think the most insidious. Some days, you just don't have the capacity to delve into the mass of spaghetti shitshow that you know you need to rectify and straighten it out during the 9-5 business hours. Maybe those hours of clarity strike at 2 AM, or 8 PM, or whatever, and you can work through it then when your brain is in the right mode in a couple of hours, rather than fiddle-fucking around through it for days or weeks of the normal, butts-in-the-seats business hours.

Having to still be there and try to force yourself to be kind of useful when you just don't have it, is pretty demoralizing, and engenders a resentment and apathy towards exploiting those "off-work" hours when inspiration does strike.