Brother,
I can symphatize with you, because I have been there before.
Brother, I would encourage you to prayerfully read Romans 6,7, and 8. In these chapters you will finds everything that you need from the Lord to overcome sin in your life.
Realize that the same devil that tempts you to sin is also the one that condemns you when you do sin.
God loves your brother and He wants to set you free, but it is not in struggling, sriving or even setting your will not to sin that will give you the power to overcome sin.
Realize that the Lord Jesus has already died for your sins and you have died with him. Know that you are dead to sin, because the Word declares it, and then when temptation comes, you stand on what the Lord has already done. You reckon or account yourself as being dead to sin but alive unto Christ.
The good news is that sin shall not have dominion over you.That the law of the Spirit of life in Christ has set you free from the law of sin and death. The Holy Spirit will lead you in the way of freedom as you continue in the Word of God. You shall know the truth and the truth shall make you free.
you don't have to sin, but if you do, go immediately to the throne of grace confessing your sin and receiving the cleansing of the blood of Jesus. Refuse to allow the devil to condemn you. The Holy Spirit will convict you of any sin so that you can confess, repent, and remain in fellowship with God.
Jesus Christ is the only one that can deliver you from this body of death. In our flesh dwells no good thing.
Surrender yourself totally to the Lord and stay watchful.
God has total victory for you brother!!