JW, I can certainly relate to this. I too let the powers that be simply pile on the work, until things start to go awry, and mistakes are made, and managers wonder why.
If you're not careful, you are heading for a nervous breakdown due to overload. Be sure to monitor your blood pressure while in the middle of all this. I found mine to be extremely high a few months ago. That's when I started insisting on some changes at work. You simply can't do it all.
Movinonup 