The only way someone can remove an addiction is to link pain with masturbation and porn,and pleasure to not doing it.Can you suggest anything(not stupid answers like "cut you penis haha")
I've tried this method and it isn't the greatest or most healthiest. If you do something to cause you pain whilst watching porn or masturbating, you may accidentally be training yourself to be turned on by pain AND porn at the same time. The only thing that you can link is the guilt and emptiness you feel after relapse. Focus in really sharply on these feelings and let them remind you that PMO leads to those feelings.
I think convincing yourself this is easier, so sit down, think hard on the negative side of porn (and only the negative), of how porn had let you and people around you down, of what you missed because of porn, then how your life will be without and realise what you want is porn out of your life. This is actually the method used by Allen Carr and re-used in the book by copyright infringer and spammer. You can check it online if you wanted to.