How much IS it our responsibility when it comes to what we believe about our identity in being born again-children of God?

Ephesians 4:20

“But that is not the way you learned Christ! Assuming that you have heard about him and were taught in him, as the truth is in Jesus, to put off your old self, which belongs to your former manner of life and is corrupt through deceitful desires and to be renewed in the spirit of your minds, and to put on the new self, created after the likeness of God in true righteousness and holiness. Therefore having put away falsehood let each one of you speak the truth with his neighbor, for we are members one of another”