A year ago, I was where you are now. Today, I'm much better, but the road was not easy. Like you, I had to get the bad food out of the kitchen in order to avoid it. Since I am the one who does the shopping and the cooking, I just started buying and fixing only the food I could eat. I tried to forestall the groans, however, by fixing substitutes for the bad food–I made crackers and cookies and bread, cooked eggs for breakfast, and made my own pizza. I spent a lot of time online researching recipes and in the kitchen baking and cooking! My husband is now onboard with the diet 100% as he started to feel better also. My son is still a junk food junkie. He is 17 with his own car and his own money, and if he wants junk food he has to buy it himself. He's not, however, allowed to bring it into the kitchen. He must keep it in his car or his room.
I hope you can take control of your kitchen also. Your family members may eventually find that going along with the program is worth having you healthy and happy again! Good luck!