How can I quit the vicious cycle and lose weight?

Stop buying the food that your binging on. Go to the store once a day for what you are going to eat that day and that's it. Buy lots of fruits and veg because you can eat a lot of those without all the fat and calories and they are filling. Also when you get the urge to snack, drink lots of water. Water fills that hole in your stomach and makes you feel full.