you are not alone. my recovery effort began because i was acting out sexually with the internet, porn and trying to arrange for affairs. after my wife caught me having an internet affair, i admitted i was out of control and needed help.
for me, understanding what was driving it, and filling my time with more productive pursuits enabled me to overcome it. where i used to cruize porn sites, i now come here and other sites like this.
try this site for a start http://www.understandingsexualaddiction.org
it is a link to pride, a self-help workshop for sexual compulsion/addiction. during this workshop, i uncovered my abuse and began dealing with it.
i came to realize that we all have coping tools we use to deal with life. porn, food, drinking can all turn unhealthy very quickly. for me it was a matter of making healthier choices. sure, the coping tool is still there in that now i come here instead of porn sites, but now it is what i feel is a positive instead of a negative. other positives are working out, meditating and reading. you cannot expect yourself to quit something like porn without filling that need with something else, in my opinion.
pm me if you would like. i was very addicted to porn, but it has been a few years since i used it last. also, try the site above. PRIDE was able to help me gain perspective and power over it.