Hungry's good, right?

I'm just trying to beat it into my thick skull that being hungry is good. I've really tried to get back to being good on my diet and I've had some successes. A large bag of onion rings (the maize snacks) over the weekend wasn't one of them. But today I've had my cereal for breakfast, a big salad with Feta cheese(light) and 2 plums so far but I'm still hungry. So, do I attack my emergency Ryvita to avoid a crisis moment at the vending machine, or do I keep telling myself ... "hungry is good, hungry is good, hungry is good ..." ??