I've noticed that fantasizing is one of the main catalysts of relapse. These fantasies can be totally asexual on the surface and they usually begin days before a relapse. For example i will get a good grade on an exam or do a lot of hours of study and feel overconfident. I will start daydreaming about a future life, e.g. nice house, car, and wife. Slowly i start imagining my wife and my ideal woman. Eventually i start fantasizing cuddling my imaginary wife. Before i know it i am imagining sex and watching porn. I need to cut the head of the snake off as soon as i see it. I will not fantasize anymore. I believe it releases dopamine since it has a similar affect to porn, after a session of daydreaming i don't feel like working toward a good life, just like after a session of PMO i don't feel like interacting with real woman. Fantasizing/daydreaming is a dangerous activity and i suspect that abstaining from it and instead working on what you can will make nofap easier.