In the beginning of my christian, i used to masturbate and watch some porn. It was hard to stop. I kept focusing on stopping the sin. The more i kept focusing ons topping the sin, the more I did it. Afterwards, i started to develop a close relationship with God. Instead of one hour devotions, I would talk to Him about anything, like a close friend throughout the day. I would think about Him all day and talk to Him all day. That made me fall in love with Him. Then the temptations lost its grip.