Well, this time of year I'm storing up fat for winter
Actually, now I'm just maintaining my weight rather than dieting. That means coffee for breakfast and sometimes I get around to making toast or a bowl of cereal, begging the women who serve lunch at the faculty center to stop trying to fatten me up (typically, for lunch I eat either half a portion of whatever they are serving as a hot dish, or a sandwich, or a salad with hardboiled egg and cottage cheese or a scoop of tuna for some fat and protein). Dinner is random. Not usually very large portions of anything, just enough to feel satisfied but not full. I avoid fast food and while I haven't completely cut soda out of my diet, I drink maybe one can a week.
When I was dieting (took me about 4 months to lose 15 lbs), I just really counted calories for everything that went into my mouth. I'm on the short side, so took a guess that an 1800 calorie diet was probably healthy for me, so I aimed for 1500 calories knowing if I went over a little I'd be okay, but keeping it low enough to actually lose weight. During that time, I had a slice of whole grain toast with a thin slice of cheese for breakfast, a half sandwich for lunch, a nonfat latte with lunch (gotta count those beverage calories), and then made dinners that included a small piece of meat (any kind), about a 1/4 cup of wild rice, brown rice, or pasta (pre-cooked), and a vegetable. After dinner, I had one small piece of chocolate for dessert. But I didn't get uptight about it, so when I went out for lunch to a buffet with my co-workers for a special ocassion, I would go for a small slice of the cake, but just resisted filling my plate with everything in the buffet line. The most important thing was that I stopped getting take-out food every other night (it was not helpful that my best friend was pregnant last year, so I'd end up eating with her, and, well, I wasn't eating for two or burning calories lactating later). Basically, even though I kept my calories low, I chose my food and the spacing of meals in a way that after a few days of adjusting, I didn't feel hungry. I also wasn't trying to drop a lot of weight quickly, I just wanted to slowly lose it with a diet I could stick with. Once I got used to the smaller portions again, it has been easy to maintain because I just get full faster, so am not tempted to overeat (unless I buy potato chips or ice cream...so I just don't buy them that often).
That's the other trick I've had. I just assume that any junkfood I buy will be a single-serving, so if I don't want to eat that much, I leave it in the store. I have a lot more willpower while in the store than when sitting at home with an open bag of potato chips.