I think for just 5 pounds exercise and cutting down on anything high in sugar like soda would help a lot and is just overall more healthy. A big vice of a lot of people, including myself in the past, are things like chips and Doritoes. Once you eat one or two it's hard to stop. They are packed with carbs, and from what I have learned doing medical reports as a transcriptionist, when your body gets used to have a lot of sugar/carbs etc., it stops burning fat and instead craves carbohydrates for energy and satisfaction. Carbs, like most other things are good in moderation but many people eat far more than is really healthy.

Exercise would still be the #1 key though I think. Good luck!