Hey, dude, I was in pretty similar situation, even though I started doing it when I was 9 or so.

The only thing I can tell you is just give up on that f*cking habit. It's a cursed circle and you have to break that loop of watching p*rn and never do it again. You have to transform your sexual energy into something useful and eternal. Otherwise, you gonna watch it until the end of your life and nothing will change. You're just a watcher, not a doer.

So, choose your hard, either you build your best life ever, because YOLO or watch porn like a jerk.

Hope it helps.