The idea that you are “a sinner saved by grace” is a man-made deception – not in scripture.
Paul, in every single one of his letters except the one to the Galatians, calls believers 'SAINTS'. The way we think of ourselves is pretty much the way we are going to behave.
Every single believer should know who they are in Christ...that is, how God sees them now as having been washed in the blood of His Son.
Here is a partial list of who God says we are in Christ
John 1:12 I am God's child
John 15:15 As a disciple, I am a friend of Jesus Christ.
Romans 5:1 I have been justified (declared righteous).
1 Corinthians 6:17 I am united with the Lord, and I am one with Him in spirit.
1 Corinthians 6:19-20 I have been bought with a price and I belong to God.
1 Corinthians 12:27 I am a member of Christ's body.
Ephesians 1:3-8 I have been chosen by God and adopted as His child.
Colossians 1:13-14 I have been redeemed and forgiven of all my sins.
Colossians 2:9-10 I am complete in Christ.
Hebrews 4:14-16 I have direct access to the throne of grace through Jesus Christ.