http://www.drugrehab.us/news/how-substance-abuse-changes-the-brains-basic-thought-processes/
It is important to understand that addiction is a problem with brain functioning. Addict/Alcoholic’s do terrible things but the are almost never terrible people. Once the person gets off the drugs and in recovery you start to see the real person emerge. It takes several months for the brain to heal. The addicted individual needs to be actively involved in some sort of treatment, sober support, or 12-step program.