Fighting the secret battle of the flesh

Hey everyone, I have been fighting pornography for what seems like my whole life. And it has led me to dive into taboo scenarios that are god awful. The problem is I am so self aware of what I am doing is wrong, I can feel the devil/world tempt me, yet I can’t seem to pull myself out and lean on God. I need prayer, I need help. I can feel God pulling me back to him, but I can feel my shame telling me that I am unworthy. I feel like I have spit on God’s grace, especially after giving my life to him.