The old saying about eating breakfast really stands up. At least in my mind.
And lord, no way I could live with brekky cereal only in the morn. Gotta have meat or something with protein in it. Takes longer to digest. Fuels yer muscles.
Grazing has worked for me and that is all I can say. And if you eat when you are hungry - instead of going by anybody's rules - just eat when you want, it is so much easier to maintain a body weight.
I tend to focus on the quality of the food rather than calories or anything like that.
Obviously the crisps and choccy and brekky cereals are not the best for quality. Most brekky cereals are trash, with a few exceptions, or plain old rip offs.
Oatmeal, puffed wheat or wheat bales work.
It does seem counter-intuitive, but eating more keeps you thin. There comes a point where if you are eating the right stuff and drinking your water and getting some movement in - there just isn't room for junk. You won't want it.
Watching my friend in her efforts to shed weight, I found all this to be doubly true. She lost pounds simply by starting to eat breakfast. That's before she changed anything else - just started eating a good breakfast.
ok, enough.