I don't know what to do

Try and find the root cause of you having doing that. Something emotional going on in your life or even just hormonal changes. People use porn as a relief for something troubling them, because if you watch porn when not stimulated, you will probably feel a little grossed out or like it's pushing boundaries. Maybe hobbies aren't enough, porn is an addiction. Just like scrolling Twitter or YouTube and refreshing to see the latest, it's like instant medicine and gratification without the work, so people meditate toward it. Maybe there are other things you do a lot that you could use as a temporary replacement? Definitely don't block out porn altogether in the beginning, because that only makes you want it more, just make a timetable or make plans with someone so it interrupts your time to do that said act, and do that more and more. I watched porn everyday, and thought about it everyday too, but I stopped on my own, and that was when I couldn't use those things to carry my weights anymore. When you begin to think of something sexual, what were you doing before that? Were you sitting down with nothing to stimulate you, were you doing work, or were you maybe even in a conversation you were interested in, and it appeared in your mind. If you do that, you know what you're working with, and you can only then begin practicing to slow and shut the thoughts down. Try meditating, or washing up, or eating some hot food...my mind relaxes when I do those, and sexual stuff is based on fluctuating hormones and emotions I'm pretty sure. The best antidote comes from within, you just gotta find it! 😁❤️

The best thing that has worked for me is to give your addiction to God. Since I have given my addiction to God, I have been finding true and lasting freedom from pornography. When you grow in your relationship with God, you start to realize how much worse sin is. When you grow in love with God, you grow to hate sin. I recommend that you take the purity bootcamp course on Setting Captives Free. It is a free online course. It has been instrumental in leading me to freedom. I started watching porn at age 13, and I wish that I never had. I will be praying for you. God loves you and he wants to fight this battle with you. Setting Captives Free: https://settingcaptivesfree.com/course/pure30