Out Of Commission

I don't mean to complain...but this week sucks.  It seems like it has been one thing after another.  I'm supposed to be in week two of 1/2 marathon training but instead, I'm stuck in my house hardly able to move, because I've done something to my back.  Not being able to work out has me a little depressed.  Does it ever happen to you that you never realize how much you depend on something until you can't do it anymore or use it anymore?  I need to be better.  I feel lethargic.  *Sorry to have this little temper-tantrum.*