What keeps you from being the size you want to be?
People believe that they get some sort of genuine pleasure or benefit from the junk food. They fear that even if they do succeed in losing weight they will be miserable and feel deprived for the rest of their lives and so struggle to control it.
In addition to that fear, they also fear the downsides of over eating; the health worries, the stigma, the cost, the slavery and although they work hard not to think about them they remain like a huge dark cloud at the back of their mind.
These are the fears that keep them hooked.
The method removes your need and desire to eat junk food and over eat so removing the fears that keep you hooked.