Now, I’m a Fat Boring Old Fart™. But with portion control and only a couple of miles of walking a day I can lose weight. I’d suggest high-bulk, low-Calorie (or is that kilo-calorie?) foods. For example, steel-cut oats (McCann’s Irish Oatmeal) have 100 Calories per serve. A spoonful of jam has 50 Calories. That’s enough to hold me 'til lunch. I like to cook it in a slow-cooker overnight with dried cranberries in it. (Obviously, no jam in that case.) Have some one morning, and reheat the leftover the next and the next and the next. A foot-long Subway veggie sub with all of the veggies comes in around 500 Calories or so. (Hint: Add the jalapeños. They add a very nice flavour, and may entice you to drink more water.) A foot-long sandwich should be enough for anyone in one sitting, and it’s easy to only eat half and save the other half for the long drive home. It can be difficult cutting portions if you’re used to big ones; but after a few days it gets easier.
My downfall is rice. Man, I love rice! Plain white rice with nothing on it. But if I eat it, I’m bound to be heavier the next day. If you find that a particular food does that to you, it’s best to find something else.
I don’t think it’s useful to find prepackaged meals that you eat every day. For one thing, the low-Calorie ones aren’t filling IMO. For another, it’s too easy to get something similar at a restaurant – with different Calorie contents and larger portions. Unless you want to eat a veggie sub every day, look at different foods and learn how to cook them. I like to cook. (No, I really like to cook!) So I can decide how many Calories I put in my meals. Today I made seared ahi. What’s that? 250? 300 Calories? A little more for some soy sauce and wasabi paste. Still not too bad, and it filled me up. (Oh, it would have been so good to have rice with it!) High in protein, low in fat.
So be aware of what you’re eating. Eat less of it. Learn to cook foods you like that are low in Calories. Long-cooking foods (like the Irish Oatmeal) you can make extra of and eat over several meals. Just don’t eat it all in one go. Avoid prepackaged foods.