Neither can I today...I'm fed up- must be time to turn off the tv and computer for awhile. I'm an ole grump today.
Be advised, battle fatigue happens way behind the lines too.
Take care of your basic needs first, sleep and proper nutrition.
When you feel it building up on you, step back for a while and get your head on straight before returning. Pick your times in advance if you can.
The whole country needs to take a "long haul" view of this, because it's going to be exactly that.
"Surge mode" is only good for a few days, after that you have to be capable of a sustained effort.