Gabor Mate heals heroin addicts with two powerful psychedelic plants: Ayahuasca (DMT) and Iboga. I have been to a couple of Ayahuasca ceremonies in the past year, and I can report that - among its many awesome effects - it effectively resets your inner emotional "firmware", helping you cope with stressful situations and addictions much better (I had instantly quit smoking after the first ceremony.)

Vipassana meditation take a slower route, but some say more thorough - it transforms your self into being more reflective, more appreciative and less judging. I've yet to try it out on a 10-day retreat, but even people who practice half-hour daily buddhist meditation praise its beneficial effects on mental and physical well being.

Both Ayahuasca and Vipassana are great routes you can take to battle your addictions, not only to alcohol or tobacco but also many kinds of pain.