>>/71271/
I defo second  >>/79426/
If you think of it as a war against your weakness, then you can apply a scorched earth strategy. Make it as hard for yourself to fap to porn as possible: delete all your stash, block all the websites, systematically hide all fap bait threads if you're still on cuckchan and put your computer in a place where family/neighbors could see you.
Making it hard for yourself to watch porn will make it very easy to quit, that's how I managed it.