You know what this reminds me of - my Dad was talking about the time he tried the Slim-Fast diet (this was at least 10 years ago...see...it's been around for awhile!
Dad has kind of a warped sense of humor...
"I've been doing that Slim-Fast diet and I don't understand why I'm not losing weight! I'm following their instructions - I have a Slim-Fast for breakfast, then around noon I have another Slim-Fast for lunch; then from 5:30 - 8:30 pm I have a normal dinner!!"
Okay...with me anyway, what works is to have a nice big breakfast to hold you over. For me "big" is a bowl of oatmeal and an eggwhite omelette (made with 1 whole egg and 5 whites, a little big of FF cheese and perhaps some veggies mixed in - it SEEMS like a lot of food but the calorie count is not all that much...maybe 300 cals or so). Include a couple of healthy snacks - like fruit or something - midmorning and midafternoon, have a good healthy lunch (maybe a chicken salad?) and go kind of light on dinner - like a piece of fish and a veggie. Make sure you do your proteins!
If you WANT to do a cereal diet like the Special K diet - try using another cereal that has more 'fillupability'. First one that comes to mind is one of my hubby's favorites - Quaker Corn Bran. 90 calories a serving and it has WAY more fiber than Special K, plus it tastes good too!