This is definitely one of those "get up and do it" things. I can procrastinate with the best of 'em and if I let myself, I'll put off going to the gym over and over and over until it's too late and then I've gone a week w/out working out.
I've made going to the gym one of those things that is part of my life - just like getting up and going to work in the morning, doing the dishes, paying the bills. I might not want to do it or have the motivation to do it, but I *do* it because it's just one of those things that a responsible adult does as part of living life. That's the way I *have* to htink about it or else I make up every reason in the book not to go.