Salvation is made possible through Christ - and his sacrifice, which is a gift. Forgiveness isn't earned - and we are all sinners. So yes - we can't boast of this. But this is only part of the picture - else everyone would be saved unconditionally. Good works are required of us - and these are the basis upon which we are judged. These are what we choose to do of our own volition, or not. And everyone is born capable of doing good works - in fact, that is given as a reason for our creation:
Ephesians 2:10 For we are God’s handiwork, created in Christ Jesus to do good works, which God prepared in advance for us to do.
You want to hold onto this idea that God has specially selected you and others for salvation - vs recognizing that there is no favoritism with God, that favoritism is a sin.
Acts 10:34 Then Peter began to speak: “I now realize how true it is that God does not show favoritism
Romans 2:11 For God does not show favoritism.
James 2:9 But if you show favoritism, you sin and are convicted by the law as lawbreakers.
Ephesians 6:9 And masters, treat your slaves in the same way. Do not threaten them, since you know that he who is both their Master and yours is in heaven, and there is no favoritism with him.