Frustrated & Defeated but not giving up....

I sit here another December needing to drop some weight and can't believe that I don't have better control of this. 2 years ago, almost to the day, I made up my mind that with My Fitness Pal, I WOULD FINALLY LOSE the extra weight. I was motivated by a wedding and family cruise and I did it. I logged faithfully & honestly, exercised regularly with variety & lost 20 pounds in 6 months. I continued losing after the cruise then had a family matter that caused such distress I could not eat much at all and lost an additional 10 pounds. That was unhealthy and unintentional and I knew it would not last once I bounced back from the emotional wreckage that was caused. Starting this past summer I noticed more than the 10 pounds creeping back on so tried to reign it back in with no success. I am now still about 8 pounds down but so not where I want to me. All the new clothes I bought are not fitting and I feel sluggish and unhealthy and DEFEATED. I feel like people are saying Yep, another yo yo dieter who couldn't stick with it. Oddly enough, some people are nicer to me the more weight I carry and seemed very envious when I was losing so successfully (haters). But I will prevail. I am starting again and I do believe MFP is the best thing out there to keep track of food & exercise. I would love to hear from you if you have a similar story and we could possibly offer each other encouragement.