Overeating when buffering doesn’t seem necessary

Hi there. I’m doing this program because I want to change my thoughts and feel better. Now I realize 50 percent of the time is gonna be ass (love when you say that) which is a relief. So when I’m feeling great and zen and happy sometimes I still grab a giant ice cream by myself. I don’t want to be a bad influence on my family (my husband is 100 pounds overweight). It’s like I deserve this. I can do what I want. I’m free. Self sabotage? What’s up w this?