Welcome,
I've had good success overcoming the basic addiction with the following approach.
First, I realize that it is not pornography or masturbation that I am addicted to, rather it is lust, in all its forms. This includes getting a quick buzz from looking at women in the street, and entertaining fantasies, in addition to the more obvious forms of acting out. It's all the same. It's all lust. It all has to go.
So I start by agressively guarding my eyes in all settings, taking care not to look at any part of any woman in any setting, except my own family and people I must see in a business setting. These little peeks here and there keep the addiction fed. Our goal is to starve and thus weaken it.
The second major source of the lust drug is machshovos, fantasies. These might be obviously lewd, or even just thoughts of wanting to masturbate. When these thoughts come, I immediately daven the following tefillah,
"Ribono Shel Olam, I am powerless over lust and my life has become unmanageable.
Only You can restore me to sanity.
I turn my life and my lust over to your care and ask you to please heal me from this illness of lust. I don’t want to lust. I only want You and a relationship with You and your Torah. I surrender my lust to you. Please take my lust."
I say this immediately, as soon as I detect any lustful machshovos. In the beginning (almost 3 1/2 years ago) I needed to say this dozens of times a day. I stubbornly refused to give in to lust, and clung to Hashem to help me through, one day at a time.
This simple approach will get you sober if you commit to it. There will still be work to be done on yourself to remain in recovery. We all need to get to know our weaknesses, chesronos, and work on them constantly in order to remain in recovery. But first get sober from lust with complete abstinence.
It's also very important to take this one day at a time. You only ever have to get through today. Just today. That's it.
Hatzlocha,
Alex