Here we go again

Ok so just married and life is good. However I need to shed at least 20 lbs for health and joint issues. I've always battled with my weight. My highest weight is now and was also the same weight I was about ten years ago. I shed about 65 lbs ten years ago and was a size 6. I don't ever see that again in my future but I will be happy at a size 10 or 12. I am 5 8" so I can pull off a healthy and appealing weight at about 175 - 180. This is my target. To be truthful I haven't even weighed myself bu...