How to stop random food cravings that will not go away?

I'm not obese or fat, but I'm still chubby and I'm an adult too. Every time I watch an advertisement on television with a good as heck lookin pizza or burrito or some brand of chips that looks really good, I immediately want it and have to go get it. No matter if it is 1:30 am in the morning. Now, a lot of times I won't go and get what I see, but sometimes I do. How do I stop the cravings? I see lots of questions on here about this, but I wanna know what to do when I see some good dang food on television because especially at a fast food restaurant they will show the best looking double cheeseburger imaginable on their ads, and it makes me want to rush out and get one, and sometimes I do that. It's not an addiction, but when I get the urge, how can I just let it ease out of my mind? Any info will help, thanks and lol!