Assuming you've not yet done these things....
swap whole milk for 2% then 1% then skim
Land O Lakes makes a very tasty 2% cheese--its the only lowfat hard cheese (aside from all part skim mozzarella) that I can vouch for
Polanar allfruit spreads instead of jellies/jams
Fage or Chobani Greek 0% yogurt for sour cream - you get protein and less calories than the sour cream
Philly 1/3 reduced fat cream cheese
Kashi cereals have many healthier versions of main stream options - 7 grain puffs instead of rice krispies - sun something or other tastes like corn pops
whole wheat or grain breads instead of wonder white
grain rolls instead of round/kaiser rolls
drink plenty of water
if you want to consume artificial sweeteners, there is a whole different world of options open to you
if you cook, check out
www.skinnytaste.com for some super recipes - new twists on old favorites - particularly the no-bake cheesecake is super
baked chip snacks rather than fried