I need friends! 50lb goal.

My name is Sarah. I could really lose some friends on here too. I am on my third day of a 1200 calories diet. And I have 50lbs to lose. This morning I wanted to eat a chocolate coated donut and watch Sunday morning shows with my son. But instead I got up ate a tangelo and yogurt and got on the treadmill for an hour. All of my family thinks I'm crazy for worrying so much about my weight but I wanna be healthy and not cry when I try on jeans. I decided to start working on my weight when my grandmother that I haven't seen in 4 years didn't recognize me. I told her who I was and she said " boy you've gotten fat like your mother". I was skinny my whole life and 5 years ago quit smoking now I cat quit gaining weight and trying this and lots of exercise.