I, too, had to change my lifestyle to lose weight. My high weight was 282 lbs. and my low was 217. I'm at 227 right now because I've been cheating a bit so I'm trying to knock those recent 10 lbs off.
Basically I try not to eat processed sugars and carbs like white bread, candy, pop, etc. and replace them with whole grain foods, low fat meat, etc.
Here's some meals I have on a good day:
Breakfast:
1 serving of oatmeal (not quick oats, regular)
a couple packets of Splenda to sweeten it up
Raisins or banana mixed in
Snack:
Low fat, no sugar added yogurt
or
Apple with skin
Lunch:
Two sandwiches made with - light bread (45 cals per slice), large amounts of lean turkey or ham, fat free american cheese, light olive oil based mayo
Carrots
Snack:
Whichever from previous snack I did not eat
Supper:
Boneless, skinless chicken breast with seasoning
Baked red potato with skin and a little light margarine and fat free sour cream
Salad with low cal dressing or steamed vegetables like broccoli, cauliflower, and carrots
Is the food as good as eating out or junk food? No. Does it make you lose weight without exercise? YES.