Getting back on Track

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I'm new here on myfitnesspal and it's taken me this long after the Holidays to get back on track. I've lost 100 pounds and then started struggling and gained back 20 pounds. I've got to STOP this gaining and get started back losing again. I got my first smart phone and I downloaded the myfitnesspal app and I love it... it works with my home computer loggings here on myfitnesspal.