Deerhunter,
I work with individuals everyday who are addicted to pornography. There are things that can and do help. Since you express a private, personal problem, send me a PM if you so desire. I would not say that the treatment I offer is the end all and be all of the answer, but I have seen it work. More importantly, the answers come from you and the Lord, not me, I assist in being a guide.
That said, I don't know if you are a member of a particular congregation, but I would always say to begin with local priesthood clergy help. Check with you Reverend, Pastor or Priest and see what they have to say.
If you are not active in a particular faith, there are other professional organizations that can help. You are not alone, there are so many who struggle with this. You have my prayers and further professional ideas if you are interested. Furthermore, this would come at no cost to you. My preactice is plenty full, but thoughtI could point you in the right direction if you so desire.
God Bless,
Porter
Ps. Some of my thoughts are in the Self-Abuse thread that was here last week. I think Alex, Chuck and the Rev and others also gave some great advice on that thread as well. Porn and masturbation usually run together hand in hand (pun not intended, but present!)