If I'm so excited about running, why am I not doing it?

I haven't exercised this week. Part of the reason I haven't exercises this week can be attributed to the gross lack of sleep I experienced. I also have been really stressed. Maybe that Sunday incident took more of a toll that I thought. Who knows? All I know is that I get happy tingles in my brain when I think about running, I am envious of people I see running...yet I am not running. It irks me a great deal. Perhaps I can get some miles in tomorrow.