After arguing with myself for a while, I finally got off my duff and went and walked on the Tread Climber (uphill all the way) for 20 minutes. Some may not think that was very long, but, hey, I haven't exercised in a very, very long time. I just need to stick with it and make it a habit.
I also have to admit, after exercising, I feel better -- I know it's those wonderful endorphins!! I thought I was going to die for a few minutes afterwards; but, hey, it's the first step!