People suffering with Eating Disorders take on unfair burdens of control for the world around them. They may feel responsible to make the world a better place, to want to cure the ills of everyone, and when they can't, punish themselves with self-hate remarks and actions. There is often a strong need to control their own lives and the lives of people around them, and when they cannot, think it is unfair and take it out on themselves.
Self-blame can be another aspect...the sufferer may blame themselves for everything bad that has ever happened to them, believing that in some way they deserve it; ie., "my parents abused me because I was a horrible kid." On the contrary, they may also blame others for everything and take no responsibilty for their own lives. For example: "if you'd be there for me, I wouldn't have purged."
People living with Anorexia and Bulimia have a hard time being optomistic about any aspect of a situation or their lives. Everything seems negative in one way or another, or they only pick the negative to focus on. In comparison to others someone else who achieves something is considered great, but the same achievement for themselves would be met with negativity and how it could have been done better. Though the world is not seen as perfect and others are not expected to act as such, the person suffering with the Eating Disorder may have high expectations of perfection for themselves.
Ultimately, one of the biggest perception distortions of the person with Anorexia or Bulimia is that "life will be better and I will be happy when I lose the weight." There is a false sense of control that is achieved during self-starvation/restriction, a feeling of comfort when binging, or a temporary release of emotions and guilt during purging... in reality none of the above has been achieved except within the sufferers perception. There is no light at the end of the tunnel of an Eating Disorder, even though those who suffer think there is. In reality, the only true light comes from recovery.