I feel for you brother. There are a lot of us who have struggled with this very same addiction. I myself once asked if I would ever be truly clean from this addiction. I served a full time mission, was completely honest with my wife, went to see Bishops and Stake presidents, and did everything they asked including addiction recovery meetings and was still unsuccessful. But I just could not quit. I knew the Gospel of Jesus Christ was true and so after every single failure I dragged myself back up again. I was determined to overcome this and I knew Christ had promised he could save me and that he was not a liar. I finally had a miraculous response to prayer that led me to a piece of software called Accountable2You. It allowed me to link my wife into all of my internet accounts including my phone. It was like having her with me strengthening me 24/7. This combined with my Bishop's inspired council finally got me off the endless cycle of confession, repentance, and relapse. I don't know if my answer is your answer brother, but I want you to know you can do it. If the Lord saved me, and he did, he can save you too. But you won't be able to save yourself so come back with the Saints. Even if you can't have a calling or partake of the Sacrament it's better to be trying to get yourself right than to quit. I understand where you are coming from and I wish you the best☺