That’s a good question. When it comes to recognising sin, the Holy Spirit illuminates and convicts us in relation to sins we need to confess. And when we are obedient and in fellowship with God, and open to His voice, then He is more likely to speak and point out things we need to change. But the more we quench the Holy Spirit and ignore His voice, then the more dull we will be with relation to hearing His voice.

So the first step is confessing our sins. And 1 John 1:9 tells us that He is faithful and just to forgive us of our sins.

Then repentance is a 180 degree turning away from our sin toward trust and obedience towards God. So here we also need God’s power and grace to put off our old selves and put on the new self, dying to self and following Jesus.

Not sure if I’ve answered your question. :)