This is just me.....but years ago, I'd go to the gym, all motivated...and convince myself of how great it was, etc. But I finally came to realize, after having to force myself to go and coming up with excuses to avoid it, that it was not a great long-term plan for me.
So I began to do something I love....walking while listening to my ipod. And I do it almost every day and rarely come up with excuses for not doing it. I actually look forward to it......it's a great opportunity to think.
IMO, if going to the gym is not something you love doing and look forward to doing....find an alternative that you do love. You're much more likely to stick with it for the long-term.
deena