Need more help.

I have been addicted to pornography since I was in 8th grade, so 4 years. Ever since then, there hasn't been a week go by that I haven't masturbated at least every other night. When I don't masturbate, I watch something that at least turns me on. I have dug myself out of the hole a little bit by hanging out with the good people who are big into God and everything he is for, but behind their backs I am still struggling to get myself to not type in something that I have a fetish for at that moment and watch it until I'm done. I need some more help defeating this to the point where I can help my other friends quit watching porn and looking at women as pleasure-givers.