Hi Cathy! Happy birthday and

! Losing the weight is the best birthday present you can give yourself -- because we're never to old for our dreams to come true.
I'm 51 now and was 46 when I finally got my act together and lost the weight for the LAST time. My suggestions for things that work:
Exercise is KEY now that we're (shudder) middle-aged and dealing with all our lovely hormonal issues. I wholeheartedly believe that it takes lots of exercise - both cardio and weightlifting - to get rid of the fat at our age. No matter how carefully you're eating, diet alone won't cut it for long-term success. And please don't neglect the weights -- they're essential to preserve and build our muscle mass which keeps our metabolisms high. Plus weightlifting helps to prevent osteoporosis, also a good thing.
I was and am a calorie counter, focusing on lots of lean protein, good carbs, and good fats. I highly recommend Dr Pamela Peeke's
Body For Life For Women for its nutritional plan and focus on the different hormonal stages of a woman's life.
Otherwise, my only advice to you is never give up!