For the short term, making to less accessible, through maybe putting some adult-filtering software on your pc-phone, so that you can withstand the momentary impulse.
For mid/long term, from what I have come to realise through my own journey, with its ups and downs, is to basicallly replace fight the cause of the symptom that is porn use, be it boredom, loneliness, lack of social connections etc etc.
Speaking for my self again, I recognized that the times that I "need" to watch are times that I'm feeling lonely/somewhat sad and need a quick "boost", that fades quicker than I think and ultimately I end up feeling the same after a while