Resolutions are the poor stepsisters of goals; they rarely get asked to the ball, instead being relegated to cleaning the ashes out of the chimney. Goals, once achieved, get all the attention. Anyone can make a resolution. So you want to lose 45 pounds. I want to have a six-pack set of abs. Never mind that I've never had them for the past thirty years, but I could resolve to acquire them.  You, on the other hand, have been 45 pounds lighter and you remember it was good. You are more likely to take your resolution and turn it into a goal than I have of reducing my very little pudgy mid section sufficiently to uncover my taunt muscles lurking slyly beneath. Why? Because yours is a worthier resolution. Mine is silly, as I'm already an amazingly toned middle aged chick. Mother nature gifted me with a naturally slim physique and gravity does not seem to be my enemy. All my body parts remain where they have been since puberty. The best advice I will give you on this: Listen to your body. It will tell you when to quit eating. Then, do something physical everyday, even if it's simply using the stairs instead of the elevator. 

Now, on to the matter of your age: Imagine my surprise to find out you had qualified yourself to membership with AARP. As long as I'm not expected to follow suit. What it means is that we are finally at an age where it's becoming irrelevant. One day, I'm 30, the next I'm 45, and I move around the decades effortlessly, not too concerned about the number. It only matters when you start to feel a "certain age." The best cure seems to work for just about everything in my world right now: Tune Out! Turn off the TV, ignore the fashion and 'women' magazines and just go about your business creating your own meaning to your existence.