Diet Plan

How do you stay on a diet plan when family members are sabotaging it?
I’m trying to get fit, but certain family members are trying to sabotage it.
How can I stay focused on my diet and fitness plan without getting in fights with them about it?
Also, does anyone know of any good ways to help with self control?
Move to another state,
Diet Plan

Thanks for the info, I will be checking in..thanks