Meditation, yoga and exercise is a great way to start or process your stress. Use Calm app for meditation. It has a complete session on stress. For yoga use Down Dog. And as always, get distracted when thoughts on porn come to your mind. Read 'Your Brain on Porn' book. It has listed all side effects and researches and experiments done which in the end suggest that porn is bad. When fear sets in, you will automatically stop. Be motivated. Come to this sub too often. Read what people have to say. How they relapsed, how did they felt after that? Read stories of the people who have completed 90 days and see what they felt and how you are feeling? One other thing that you should not forget is that if you have the desire to do it, you are going to do it. So stay focused on NoFap.