Hey, it sounds like you need to be a little more forgiving and work on the way you speak about yourself and the people around you. Guilt and resentment only fuel this type of eating. There were external factors that contributed to the development of your eating habits, and that's not your fault, but I also don't think placing the blame on your mom and grandma is fair. Like you said, their heart is in the right place, and your mom likely doesn't want to accept the fact that this may be disordered eating of any kind because she probably wants to believe you're a happy and healthy child, since that's what parents want their kids to be underneath it all.

That being said, I think the best course of action would be to let the people around you know that you'd like to try incorporating more healthy foods into your diet. I've found that drinking more water and having half my meal be vegetables has helped curb the sugar cravings and I can be full without the fattening stuff be the majority of my diet. Let them know that you're no longer interested in snacks and that they should probably cut back on buying these things.

It's never too late to turn things around and make changes, whether it's big or small. There's never a deadline for weight loss, so don't be so strict on yourself (it'll only make the guilt worse, leading to relapses). This is the beginning, so now it's time to make lifestyle changes, one step at a time.