Mentally and Emotionally Exhausted Again

I do not know what is wrong with me, but once again, I came home from work mentally and emotionally drained.  It was a very easy day at work, except we were all getting assigned a TV, DVD, VCR, and we were expected to check the set up and make sure it worked before we took it to our office.

Technology? Me? No way.  A dear coworker helped and he figured out a set-up that will work for me.  The TV is old and very heavy and pushing it down the hallway hurt my back.  I do not do much video therapy, so I can manage.  I bet I can ask for an hall porter to help push it for me, too, when I need to use it.

But nothing else I did today was taxing.  So, I am not sure why I am struggling with work right now. This is not new. It has happened before. Sometimes, I can pinpoint a reason. Usually, I cannot.