Many addicts fail to overcome their addictions because they don't know what they want. A man can't serve two masters, so said the sages of yore. You can't successfully battle an addiction if you still think you can derive some pleasure from the drugs. Looking thus [favorably] at the drugs will make it impossible to stop using a substance because you, from time to time, will want to have a taste of the drugs just to remind yourself of how it feels like to be high or something. If you are serious about fighting an addiction you need to make the tough choice — fight the addiction no matter what it takes. Banish all positive thoughts + memories you might have of the drugs. Look only at their dark side. The pain they've caused you. All they've cost you. Keep your eyes on all the chaos drugs have wreaked in your life and your commitment to be free of them will never waver.