Running on Fumes

Sunday night proved to me I am simply running on fumes these days and am in need of some serious rest.  I should have known something was wrong with my because I had to focus so much on driving home.  When I got to the house, I shut off my truck and sat there for a sec.  At least I thought it was a second.  I closed my eyes and when I opened them, it was hours later.  I had actually slept in my truck that night.  I was too tired mentally and physically when I got home to take the short journey from the driveway to my couch.  I am running on fumes.  And right now I don't know when I will have time to refuel.