I have been hearing the "eat a big breakfast" thing for some time now. Maybe I should give it a whirl.
As it is now, I only eat breakfast Saturday and Sunday. Same thing, each day, a sausage breakfast burrito with green chile and a 16 ounce coffee. The burrito would probably amount to one sausage patty, one scrambled egg, hash browns, and a small tortilla.
Lunch is usually baked fish and a vegetable or some lean meat/vegetable or a chef's salad w/ homemade dressing. (Today was a small piece of fried cod, mashed taters, and peas/carrots mix.)
Dinner and later is where I tend to go overboard, especially when kiddo is around. Last week I made a big pan of salmon/shrimp stir fry. Ate a reasonable amount, and put the rest in the refrigerator.
Next morning, it was all gone. I have found I get up in the middle of the night and eat stuff and don't even remember it the next morning.