Be Reconciled to God

2 Corinthians 5:17-21 "Therefore, if anyone is in Christ, the new creation has come: The old has gone, the new is here! All this is from God, who reconciled us to himself through Christ and gave us the ministry of reconciliation: that God was reconciling the world to himself in Christ, not counting people's sins against them. And he has committed to us the message of reconciliation...." * Paul speaks a lot about himself "having a clear conscience". Can you please tell me where the conscience is? Is it in our mind or is it a part of our Spirit? Is it the Holy Spirit speaking within us, where He resides inside in us as believers? Thank you. * Do we confess every single sin in our lives, or just know that we are sinners? * If we're all born separated from God what happens to a baby or child who hasn't reached the age of accountability?