I’ve noticed that if I say “I won’t do this anymore at all”, it doesn’t work. But if I say “I’ll only spend this much this month on sex workers, gambling, etc.” I’m able to mellow down. I’ve also noticed some people suggest that moderation doesn’t work and you should try to be as cold turkey as possible.
You probably need to try to figure it out. I quit porn cold turkey as that was the only way I coulddo it. I have tend to become addicted to caffeine and candy (sugar) if I’m not careful, so I’ve quite those several times. Tried both cold turkey and gradually for those and found that reducing fast and controlled work for those. So going from 5 cups of coffee a day to 2 a day for a week, to maximum one a day for a week to 2-3 cups a week.