“I can’t, Daddy. You’ll be proud of me when this is finished, I promise.” I was his only child. He had married again, but his new wife couldn’t have children, so I was his only hope for grandkids. If I was fat, no one would want to marry me. I wanted to tell him this, to explain that this wasn’t just a diet, that everything in my future and his depended on it, but I couldn’t say the words.