If you aren't failing you aren't learning. If we are not confessing our sins and failures to God and to those we have harmed we are not being forgiven nor are we growing in wisdom.
No one can claim they never sin or they never fail. If we are born-again believers we hate when we have sinned and we are convicted by the Holy Spirit to confess.
1 John 1:8-10 "…8 If we say we have no sin, we deceive ourselves, and the truth is not in us. 9 If we confess our sins, He is faithful and just to forgive us our sins and to cleanse us from all unrighteousness. 10 If we say we have not sinned, we make Him out to be a liar, and His word is not in us.…"
When we are in sin God disciplines us, sometimes by His own hand and other times merely by the uncomfortable consequences of that sin until we confess under the unbearable weight of that burden of sin.
Psalm 32:5
"Then I acknowledged my sin to You and did not hide my iniquity. I said, "I will confess my transgressions to the LORD," and You forgave the guilt of my sin. Selah"
Anyone who has sinned and confessed understands the joy and beauty of being forgiven and moving on to forsake that sin. Those who do not think they have anything to confess hoping no one will notice or that they will just forget and do better next time are not forgiven and do not experience the cleansing that frees our soul from guilt, blame and fault.
This is why the "hyper-grace" doctrine is so devastating as it teaches that we need not confess or even forsake our sins. This is a doctrine of devils to keep people trapped in their sin never being free and detached from the regret that torments those who never confess.
When Christ forgives it is fully and permanently. No accusations of the devil and others will cause guilt in us because Christ has removed our sin guiltiness. Our conscience becomes clear and we walk in freedom.
Proverbs 28:13
"He who conceals his sins will not prosper, but whoever confesses and renounces them will find mercy."
Jesus Christ knows best and how we remain in bondage to guilt if we do not confess, He provided this way of decontaminating our soul completely.
Ephesians 1:7
“In Him we have redemption through His blood, the forgiveness of sins, according to the riches of His grace”
Isaiah 1:18
“ ‘Come now, and let us reason together,’ ” says the Lord, ‘Though your sins are like scarlet, they shall be as white as snow; though they are red like crimson, they shall be as wool’ ”
Every sin can be forgiven no matter how terrible. God counts all sin the same; an offense against Him. No sin is too big and no sin is to small to confess, they are all offences against God.
James 2:9-10 "But if you show partiality, you are committing sin and are convicted by the law as transgressors. For whoever keeps the whole law and yet stumbles in one point, he has become guilty of all.
The only unforgivable sin is rejecting Christ until death.
Keep looking up we we are going home soon, those who have been born-again.