Ah this is a strange one. I seem to be the one who advocates a hormone based strategy around here and it also seems my past advice rubs some the wrong way. It appears that you have mostly a porn addiction but you are very tempted to "act out" which then becomes something as dangerous as a high stakes gambling addiction.

My advice to you is to GET OUT OF THE BUBBLE! Whenever you find yourself in an an erotic trance from this type of porn immediately masturbate. If you are still in the bubble after you cum then masturbate again but try to do so mechanically without fantasizing. Actually destroying your porn clip afterwards is counterproductive because you will only buy a new one at a later date. Instead when you feel a tingle use the old stuff which you've paid and try to get off as quickly as possible. DO NOT LINGER IN THE BUBBLE. It might also be a good idea to have sex with your wife more often.