Ephesians 6:10-13

Whether you like it or not, if you are a Christian, you are in spiritual war. You belong to the army of the Lord. What kind of soldier you become for Christ will be determined by the choices you make in life and how important serving the Lord is to you.

By the grace of God and with His help, you CAN be a victorious, effective Christian for Christ, or you can be a defeated, ineffective one.