On some level, we fear change. Some of us also fear success in reaching our goals. Maybe our being sick is benefitting us because we get attention or we get to be coddled and if someone is taking care of us we feel loved. Maybe we do not feel worthy of love on its own. Why would having extra weight be safer than losing the weight and getting tons of attention? Maybe your extra layer of fat is keeping people at a distance, so they do not get too close, do not truly see you, the real you.