I'm sorry this is happening to you. You have to do what is best for you and staying positive mentally, will take you far on this journey. I agree with @Hop_Scotch I'd say that and any further negative comments from them, I'd distance myself from them. And if they live with you, I'd walk away and not say a word. With time, they'll see that it's not up for discussion. Put some earbuds in with positive songs that get you in a good mood and take a walk. I have an entire play list of songs that I listen to at the gym when I'm not feeling "strong" it gets me back to where I need to be mentally.