Where did my inspiration go?

Another weekend just went by where I promised myself I would lock myself up and work on some art and it just didn't happen. After cleaning my house Saturday I was beat, and I still had to go grocery shopping. Needless to say nothing happened after that. Sunday I did try to sketch but just couldn't make anything meaningful come out. I was really hoping to have something new to post today. Maybe I'll dig through my sketchbook and post an oldie later.