dont keep "snacks" in the house. You cant eat them then.
Between lunch and dinner, have a snack. But keep it healthy... Maybe some apples and pb. Many morbidly obese people are malnurished because of the lack of nurtiction is what they do eat, and the effect their obesity has on their body.
Im speaking as a health care worker, and as someone who has lost 70 lbs over the past 8 years.