Be very careful, firstly, drinking because as you mention--the liver, the alcoholism, that kind of thing...but also, mixing it with the drugs, even if you don't intentionally do so, it is not a good combination...
Raynaadi and some others in this forum are very good at helping you get the help you need. AA would honestly be good for you, I think, if not for the AA thing, at least to hear other stories and relate them to your issues.
A lot of addicts do not feel "addicted" because they are not like others who are addicted--but its not the comparison with others that make us addicted or not, its what the alcohol or whatever does to us.
Best wishes, of course.
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Believe you can and you're halfway there.
--Theodore Roosevelt