Hi Alexis,
I never been to 12 step program myself but I read many positive stories about it.
I am sure there are scores of people who tried it but never recovered.
Addictions are beyond the will power. Many addicts are beyond the stage where they can just will themselves out of rut and begin the better life.

It seems that our own will power more often drives us to misery rather than shows us the way to succeed.

I observed very strong commonality in every preson who managed to recover from addictions - it's an act of "letting go and letting God".
Be that at the end of their rope - or be that as a part of some other practice - the act of "letting go" seems to be the strong defining factor of success.

Putting parallel with Hooponopono - the saying of "i love you, please forgive me" quite possibly could be interpreted as an act of letting go.
Hooponopono says that you let Divinity to take care of your memories replaying - subconscious blocks.
It' that letting go process that helps greatly in other self-help disciplines - and that might be a practical explanation why Hooponopono is so powerful too.

Gleb