I have no idea to be honest. I am leaving the judgement up to God.
We need to read the whole Bible to get the balance. John says that if any man sin, we have an advocate in heaven to prays to the father for us. He says that if we have no sin, we lie and the truth is not in us. Paul says that nothing good is in him, that is, in his flesh. John also says that if a person confesses their sin, God is faithful and just to forgive and cleanse us from all unrighteousness.
So, we have to carefully consider how the word "sin" is defined in John, and then how it is defined in Hebrews.
Paul said that where sin does abound, grace does much more abound, but he then asks, "Shall we continue in sin that grace may abound? God forbid!" So, is his definition of sin match with John's or the writer of Hebrews?
Paul outlines the work of the flesh in Galatians 5. He says that those who engage in those things on a habitual basis will not inherit the kingdom of God. So, it may very well be, that a person who professes Christianity, goes on for a while, and then turns back to a lifestyle of doing the works of the flesh, may no longer depend on the blood of Christ to justify him. But then, if that very same person turns back to Christ and throws himself on His mercy, the Scripture says, "He who comes to Me I will in no wise cast out."
But we have a body of flesh which has shortcomings and failures to keep God's perfect standards of holiness. 1 John 1:9 caters for that. If we keep short accounts with God and confess all known sin, and our shortcomings, failures, and lapses through temptation, then Jesus continues to be our defence lawyer before the Father.
No one is sinlessly perfect, and trying for sinless perfection in this life is unrealistic and futile. If we could, then Jesus wasted His time dying for us on the cross. But, faith in Christ involves openly and honestly talking about our faults and failings with God as they happen. That is what confession is all about. It is part of our everyday fellowship with God where we talk about anything and everything as one friend to another.
For the genuine believer, his consciousness of sin in himself drives him closer and deeper into Christ. For the hypocrite, his consciousness of sin makes him run away from Christ and try to hide his sinfulness under the pretence of super-spirituality.