I used to be a porn addict. It was pretty bad. At some point I decided to stop just to see if it was possible. Turned out: it was, it was fucking easy even. I stopped, and it stopped. I actually felt a bit better about myself for a few days (it didn't last). I quickly realised I had almost no desire that was not caused by porn. Like 98% of my urges to jerk off actually required porn for me to actually go through.
Fun fact: months after having stopped, I had the stupid idea: what about the new anime porn on rule34? I'm sure there are amazing new things now. Let's just look at them, without touching myself. And I swear what I watched felt like it could have made me cum without touching myself (I think it would not have happened, but it felt like it).
Anyway, I didn't act on it and since them my sexual desire has fallen a lot, literally 98% when I used to keep track of that.
Now the thing is I still feel like shit, probably worse than when I was addicted to porn. But at least I feel better about that, I don't waste 40% of my awaken time doing that and it made me see that there are at least a few things in life I can control.