It sounds like it was a buffer, a tool that helped you transition from dubland to realityland, a phase shift. Since you are mostly out of the woods now, it's a smart thing to do to see if you are controling it, or it is controling you.
Myself, i seem to not have an addictive bent, except maybe some foods. I do use a bit more booze than i used to, though. And weed, of course. But, i also abstain quite often for days.
S