It is easy to be motivated to quit porn for someone else or something else but unless there is an internal motivation to quit, the recovery does not last long.
Time is probably the most precious commodity in our lives. Porn has a way of stealing it either quantitatively or qualitatively from us.
Our brains register not only our behavior but also the location, sights, smells and the people associated with a certain activity. In porn addiction, the location can become a trigger all on its own.