Unsaved people are not called to perfect their lives before they come to the cross; the work in the lives only begins at the cross. When you accept Jesus Christ as Savior and Lord, you are then saved. However, it does not stop there. In making Jesus, Lord of your life, you have surrendered your will and fleshly desires to the Holy Spirit. “When he comes (the Holy Spirit) he will convict the world of guilt in regard to sin and righteousness and judgment” (John 16:8).
By surrendering yourself to the Lord, you are saying, “Lord, move in my life and help me to be who you want me to be.” You must be willing to see where God wants to grow you and then act accordingly.
Philippians 4:13 says, “I can do everything through him who gives me strength.” If you put your trust in the Lord, and lean on Him, there is no need to smoke cigarettes. If you say that it is too hard to quit, then you doubt the power of God to keep His promise of giving you strength.