Losing weight through changing what and how much you eat doesn't happen because you rationally decide to lose weight. You have to have a change of heart.

To get in touch with your motivation, think about the negative consequences of not changing as well as the positive ones. Successful individuals keep their motivation in the forefront of their minds all the time.

Self-control is a muscle that, like other muscles, needs exercise and strengthening. Each time you resist temptation, you are developing greater self-control. 

Some throw away their favorite food as a symbolic act that shows they have control over the food and not the other way round.

Such foods create physical changes at a cellular level that alter how our brains and bodies react. 

When analyzing your level of addiction, consider both physical dependence (changes at the cellular level) and psychological dependence (the habitual repetition of a behavior in an attempt to satisfy an emotional need). For example, how often do you use a sugary treat to lift your spirits?

You can learn from your mistakes. 

Instead of [beating yourself up] when you fail to keep your promises to yourself, seek to gain self-knowledge so you won't repeat the error. Be sure to acknowledge what you are doing right, not just what isn't working.

Although you alone can make the changes you need to make, you can't make the changes alone. 

One of the most potent forces for positive change is the emotional support of the individuals who surround you. Social pressure can work for you or against you. Hang out with the right people.