What advice would you give to a young person addicted to alcohol to help quit?

I am only 26 years old but I’m battling alcohol. I drink sometimes up to six 700ml bottles of spirits per week. I suffer from anxiety and depression.

I want to stop and get back to being myself, but I don’t know where to start. I live in Brisbane AU and I don’t know of any support groups in my area (Redcliffe)

So what advice would you give someone in my situation?