Asuka, I just generally eat whatever I did before, just with more veggies and fruits and healthier stuff in between. Like tonight, for example, we're having grilled chicken breast, mashed potatoes made with fat free evaporated skim milk (which is SO much better than regular milk), broccoli and green beans. For snacks I'll have fat free or reduced fat pretzels, fiber one bars, bananas and apples. A normal lunch is the occasional Lean Cuisine (TOO high in sodium though), or a bowl of cereal with 2% milk and toast with peanut butter...or tuna salad made with light mayo and some wheat crackers.
I'll eat a cheeseburger every other week or so, normally, but used to eat them three or four times a week. I use Sparkpeople to count calories, or if Sparkpeople doesn't have the specific burger I'm looking for, I'll look on chowbaby.com for fast food calories (tons of fast food places on there).
So let's say I'm going to allow myself a cheeseburger from Sonic (which is all we have here) on Friday. On that day I'll figure the calories for the burger (551 according to chowbaby.com), and a small order of fries if I want. Then the rest of the day I'll figure my calories (normally around 1,450 to 1,550) to stay below that goal. Sometimes I'm a little hungrier during the day on those days, but the splurge makes it worth it.
Hope that answers your question....
As for workouts, I do 35-40 minutes of cardio five days a week, and weights three days a week.