If you are in no way, shape or form making disciples of all nations, teaching them to observe all that Jesus commands, going into the world and proclaiming the Gospel to the whole creation or proclaiming repentance and forgiveness of sins in Jesus name to all nations, are you obeying your Lord? (Matthew 28: 18-20, Mark 16:15, Luke 24: 47, John 20: 21) These are the commands of The Great Commission given by Jesus and recorded in all four Gospels.
I say, if you are not participating in the Great Commission, you are not obeying God. and this is the "right" thing to do, because it is a direct command from God the Son. James tells us in chapter 4:17 that, "whoever knows the right thing to do and fails to do it, for him it is sin." Therefore, you are sinning when not participating in the Great Commission because it is the "right" thing to do and you are not doing it. Furthermore, if avoiding the Great Commission is a common practice then you must heed the words of Paul in Philippians and, "work out your own salvation with fear and trembling," because you may not be of the Lord.
1 John 3:4-10 states, "Everyone who makes a practice of sinning also practices lawlessness; sin is lawlessness. You know that he appeared in order to take away sins, and in him there is no sin. No one who abides in him keeps on sinning; no one who keeps on sinning has either seen him or known him. Little children, let no one deceive you. Whoever practices righteousness is righteous, as he is righteous. Whoever makes a practice of sinning is of the devil, for the devil has been sinning from the beginning. The reason the Son of God appeared was to destroy the works of the devil. No one born of God makes a practice of sinning, for God's seed abides in him, and he cannot keep on sinning because he has been born of God. By this it is evident who are the children of God, and who are the children of the devil: whoever does not practice righteousness is not of God, nor is the one who does not love his brother."
If your common practice is to avoid the Great Commission then you are disobeying a command from the mouth of God the Son, and this is sin. Therefore, you are "making a practice of sinning" and "whoever makes a practice of sinning is of the devil." "No one born of God makes a practice of sinning."
Question your salvation because the word of God tells us that you are not born of God but of the devil.
"Work out your own salvation with fear and trembling."(Philippians 2:12)