!!!Advice!!!

I have had a lot of body image issues in the past couple years. I’ve been on and off gaining and losing. I’ll go through periods of eating very little to eating a lot. Recently I’ve become so self conscious I only eat about 800 calories a day. Some days I feel really hungry and when I go to the kitchen to get food I’ll have a nervous breakdown thinking about gaining a pound. Since the beginning of August I’ve went from 160 to 140 Lbs. I get anxiety every time I eat food and feel like a failure. I don’t know what to do. I’ll be having a better day and something will trigger me and I’ll just feel super insecure and obese. I understand I should get help logically, but I’m not at the point of feeling comfortable enough to do that. I need advice.