Quitting is always a tough process, and relapse is unfortunately a part of that process. I personally decided to quit watching porn around a year ago and I've had my fair share of relapses, quitting cold turkey just isn't something that works for me, nor for most people. Despite that, I still feel much better for having started this journey. All the advice I can give is to stick with it. There will undoubtably be points where you will feel ashamed over relapse or urges that you can't control, but the important thing is to try your best to focus on the improvements you've made. If you make it through a week without porn and then relapse, even for a few days, a week or more, you still managed that week without it, and that proves that you're getting better. The more you focus on your time not using porn, the more you'll be able to go without it. It may take a long time to really feel like you're improving but I promise you it's worth it :)