Lust is a spirit.
You cannot think your way out of it.
You cannot discipline your way out of it permanently.
You need the Holy Spirit actively living in you and working through you.
Masturbation is literally: "I don't care how the rest of this week goes. I just need 5 seconds of relief right now."
And those 5 seconds cost you:
Clarity in prayer
Sensitivity to the Holy Spirit
How you see yourself
YOU NEED TO DESIRE TO STOP