What's your take on addiction ? I view it as a portion of your brain , possibly in your sub conscious ... which continually try's to undermine the rest of your brain ( assuming you have made the conscious desicion that you wish to give up the substance in question ) . Your conscious thought is " I will no longer take/use this for all these reasons which are rational " . That addictive portion of your brain is always looking for an opportunity to convince the rest of the brain it's a good idea to take it .
For me , rationalising it in this way gave me a target to beat . Anytime that thought entered my thinking in a moment of weakness I saw it as the diseased section of my mind trying to take over . It Became easier to see it as a section of brain that needed to either be re trained or destroyed if it refused to surrender.