Husband and Father

I have been struggling with porn addiction for a few years now. I remember seeing an add on a christian website for this site, and lately the lord has been pulling me to come here. My wife and I have a very shaky marriage, she has no idea that I look at porn but I always feel guilty when I do. I am really trying my best to be a good Father and Husband. But when my wife and I have an argument or I'm just physically frustrated it is the quickest best outlet. I am asking for prayers from anyone who does read this. I do hope that I can better my marriage, and become a better man of God.