Alright, this might turn out to be a little long winded so bear with me.
I was overweight all my life- and absolutely miserable in my body. I tried every diet in the book, but had (or rather, still have) severe binge eating issues, and would ALWAYS gain the weight back, without fail, every single time.
Then I went to school in Ohio, and met this amazing, really great guy my freshman year. I wish I could say the pounds just peeled off and I I subsisted on love and fresh air, but nope- I got comfortable in the relationship (despite the fact that he is EXTREMELY fit and good looking), and I ate my weight up to almost 200 lbs. I continued to try and "diet," but the restriction would just result in stuffing myself with bagels, cookies, pizzas in the all you can eat dining halls
A couple of semester later however, a super intensive work load led me to focus on my classes rather than food, and for the first time in my life my weight wasn't a priority. I guess I just ate like a "normal" person, regular meals, considerably less bingeing. I just happened to weigh myself at the beginning of the summer, and without realizing it, had dropped around 30 lbs! I know it sounds odd that I wouldn't have noticed losing a significant amount of weight like that, but I had yo-yoed so much before that I had clothes in all these different sizes, and had pretty much given up thinking about my weight.
But thats when the trouble began. EVERYBODY back home noticed my weight loss, and it became a talking point amongst y friends and family. I began feeling the pressure to get thinner and thinner, and basically, starved my way to 130. I had reached a point where all I was eating was an apple or a few celery sticks a day, but the feedback that I was getting was so positive that I just tried to stick to it.
Then, I moved to Prague to study abroad, and just completely let lose. The food was so unfamiliar, I missed home, i was having trouble with school, and basically, I rocketed up to 180 again. I know how you feel, the puffiness of your new body- I didn't want to go out, I was basically depressed and stayed in all day, ashamed to let anyone see me that way. My family and friends were shocked when I went home, my mother walked past me in the airport!
How did I lose it? I stopped dieting and counting calories. I *made" myself eat 3 balanced healthy meals a day, with one snack. I loosely follow the superfoods lifestyle- and I stopped trying to lose weight, just eating healthy. Thats all, if it was something that would add nutrition and help my body run smoothly, I'd eat it, I wouldn't obsess over it. The only things I did cut out completely were rice and pasta, those were huge trigger foods for me. Not to say I don't do carbs, I eat oatmeal in the mornings, and enjoy all sorts of fresh fruit and veggie. Slowly, but surely, I lost the weight over a year, and got down to 135 (I'm now fighting a 3 pound regain!). Now that I'm at this stage however, I am more vigilant, I weigh myself daily, and roughly estimate my calories, I don't go over 1500 as a rule.
I hope that was helpful to you

Let me know if I can help you with anything, or you can pm me anytime!