https://easypeasymethod.org/Well, I read that, but I couldn't suddenly drop the addiction like the book is advertised. It installed very valuable knowledge and thoughts in my head that helped further down the road, so I can still recommend it.
My suggestion is to not beat yourself up about using porn, thats the addiction wanting you to fall into self-pity and depression. I think the resolution that you want to quit is enough to start watching porn less and less. Stick with it. Each time you finish remind yourself about that, but don't feel bad about the session. You didn't get addicted in a day and you won't (probably) drop that fast either.
Important skill is to learn how to delay the fap too. Ideally, at least to the next day. That's how you build endurance. Don't count your days. Don't be like those faggots from nofap community, that make their entire life about fighting it, but need the word porn censured or they instantly cum in their pants.
If you can't manage to not watch 2 hours of porn everyday or something extreme like that, go seek a specialist. I am not being funny. There are educated people who recognize its a problem. Good luck! I also recommend vanilla doujins - I use them when I am naturally horny and need a fast release. The less stimulation the better. Perfect when you use your own memories. Porn tried to turn me into a cuck, fucking jews almost had me.