I still live at home and I have sort of the same issue. My house is FILLED with tempting food! Luckily my mom does cook pretty healthy so I don't have to worry about dinner, but I make sure to avoid the the food I don't want and make my own breakfast and lunch.
After a while it becomes pretty easy to resist all of the food around you, especially when you start seeing results. I also find that I just can't stomach a lot of it any more so when it's shoved in my face and I'm told I should have some I don't even have to think about refusing.
Still, sometimes I do have strong cravings and the stuff is RIGHT THERE. What I've learned to do is savor the taste of food because what I used to do is just shovel it into my mouth for the sake of eating. When you savor the taste you learn that you don't need 30 chips to satisfy a craving—one or two will do. So that's what I do; I'll have one chip if I NEED that taste right away. I'll make sure to savor it and realize that I've gotten the taste and I don't need it any more.
First though, try chugging a giant glass of water when you feel the need to eat something. That usually does the trick for me