I'm so discouraged, someone please give some pointers?

I'm living with my family while I intern full time for the next five weeks. I work twelve hour days and I'm not getting paid so I have no choice, which is making weight loss so difficult. I'm on the eat to live diet, which is basically a vegetarian diet, and shows huge success rates with losing weight the right way. The problem is, my mom brings terrible food in the house, refuses to make meals that are healthy, and refuses to quit buying foods that are bad. I don't expect my parents to be on this diet as well, so this is my question, how do I stay away from the bad stuff when it's right in front of my face? This is so difficult. I'm moving out in September, but I'd like to see a change NOW. I bought a steamer and a slow cooker so I can make things that are good for me, but it also comes down to avoiding the bad foods that are in front of me. What do I do?