I seem to be here alot

I'd start by staying out of dunkin donuts. I've got a thing for dunkin donuts coffee, so I brew it at home. I'm not going to argue that it's yummy coffee-it most certainly is.

If you want to eat and feel full and not kill your calories, you want to be seeking out non calorie dense foods and high fiber & high protien. Typically, this is veggies & lean protiens.

My food day:

Breakfast:
Giant bowl of oatmeal (about 200 cal)
Banana (110 cal)
Coffee (22 cal-I use fat free half & half)

Lunch (300-400 cal):
Giant salad
3-4 cups greens (<50 cal)
Tomatoes/cucumbers/onions/whatever other veggies look appealing (<50 calories)
Chicken breast (100 cal)
Salad dressing (100 cal-but can be way less depending on what I choose)
Sometimes I'll chuck a sliced up hard boiled egg in there too for another 80 cal

Dinner (350 cal):
Fish or chicken (100 cal)
Veggies (usually broccoli-a couple cups is 50 calories)
Rice (150 cal)
Sometimes more veggies if I'm hungry (usually another 50 cal)

That's about 1100 calories from pretty big meals.

Now for the snack buffet (kind of goes all day every day):
Couple pieces of fruit (200 cal)
Yogurt (100 cal)
Couple granola bars (200 cal) - these aren't the best, but they satisfy my sweet tooth

Bam-about 1600 cal/day and I eat all day every day. I actually consume more than that because i have a BAD coffee habit, but I swap out coffee calories for other snacks. Try swapping out some of the stuff you're getting at dunkin donuts for some fruit or something. For the calories, fruit is way more filling and just as portable. It's just a matter of slowly making changes and finding food you like that can fill you up without being 80 billion calories.