Porn is a very sinful and immoral addiction. It is extremely pervasive and the temptations to partake of it are all around us. It's on Cable Television, commercials, Billboards, Advertizements, Newspapers, Magazines, clothes designers, and Movies. Satan uses all of these venues to entice both believer/unbeliever.
Porn is a "Lust of the Flesh." Like any other "addiction" it grows, multiplies, and becomes more malignant as time goes by. The more you indulge yourself and give into it, the more it will grow in intensity. If allowed, it can permeate and destroy your life/mind. You must go to war with it, pray to God about it, even tell the Lord that you'll not indulge yourself in it for an entire day and ask for His help to make you stick to your promise.
Live,one day at a time and make it your goal, not to partake in it. Of course, you'll need the help of the Holy Spirit to help you. Like booze or drugs, once you have that first taste, it will lead to more and more. Make no mistake about it, you must declare, all out war with lust. If need be, find out how to "block" porn sites by using parental controls on your Laptop. Avoid looking at magazines and mental fantasies. Satan will tempt all of us with things he knows we have weaknesses for.
Both men/women are vulnerable to this lustful behavior. If you just give into it, it will continue to embed itself in your mind and body. It will cause you to feel bad about yourself. If allowed to take hold of you, it will desensitize you at some point and you may even just "Give up/give in?" First of all, are you a member of The Body of Christ and have you been sealed/indwelt and baptized (not by water) into The Body of Christ by the Holy Spirit? Have you first, heard the Grace Gospel and have a clear understanding of it?
The Bible says in Ephesians 6:12 "For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places." Our flesh (our being) is weak and needs the presence of the Holy Spirit within us to help us overcome our natural sinful nature.
You must, first and foremost, "Declare war on Porn and sinful/lustful thoughts." Porn and lustful fantasies work together to bring you down that road of destruction.
Ephesians 6:11-18 "11 Put on the whole armour of God, that ye may be able to stand against the wiles of the devil.
12 For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.
13 Wherefore take unto you the whole armour of God, that ye may be able to withstand in the evil day, and having done all, to stand.
14 Stand therefore, having your loins girt about with truth, and having on the breastplate of righteousness;
15 And your feet shod with the preparation of the gospel of peace;
16 Above all, taking the shield of faith, wherewith ye shall be able to quench all the fiery darts of the wicked.
17 And take the helmet of salvation, and the sword of the Spirit, which is the word of God:
18 Praying always with all prayer and supplication in the Spirit, and watching thereunto with all perseverance and supplication for all saints;