As far as I can tell, addiction is not a disease, it is a behavioral problem that is often comorbid with other mental illnesses, such as asperger, depression, bipolar, schizophrenia, etc.
There is no cure for addiction currently. You can try AA if you like but be careful of the crazies. The 12-steps are nonsense but as Aspies I'm sure everybody here already realizes that.
I wish I had a cure, but I do not. You have to want to change and you have to choose to change. Every time you drink or do drugs, you are making a deliberated, calculated choice (unless you are completely out of touch with reality)