I turn 40 next Monday, and my still-somewhat-misnamed Actual 40th Birthday Commemoration is this Saturday (March 24, 9pm, Jimmy's Old Town Tavern in Herndon if you're interested).
Two weeks ago, I had in mind the goal of getting down from my current weight (about 142), to my driver's license weight (well, the weight that I was when I last renewed my license, 5 years ago), which was about 130... by my birthday.
The problem with that was, I'd last been on a weight gain workout cycle, followed by three months of not going to the gym.
Also, there was St. Patrick's Day. And after a week of fairly rigorous exercise and slightly careful eating, I dropped a whole half-pound. So that ended fairly quickly.
Of course, I may simply be replacing fat with muscle (my belt feels like it's slightly looser so far).
Up until this point, I've always been a hard gainer -- even up until fairly recently, I'd skip a lunch or two and lose a pound of real weight.
Anyway, my revised fitness goal is to not worry about it until later.