Is it possible to achieve a life without sin on earth? Based on the biblical doctrines, is it possible to achieve a completely holy life without any sin during our lifetime after salvation?
Only Jesus was perfect. The notion that one has become sinless can only be thought from a heart blinded by wicked pride.


  The heart is deceitful above all things and beyond cure. Who can understand it? (NIV Jeremiah 17:9)


The bible makes the model prayer to be a daily confession of our daily sins. The moment any man thinks they have gone a day without sinning is the moment this prayer becomes insincere hypocrisy of the self-righteous.


  Give us today our daily bread. And forgive us our debts, as we also have forgiven our debtors. And lead us not into temptation, but deliver us from the evil one. ’ (NIV Matthew 6:11-13)


Even the most holy men that have ever lived never thought for a moment were were free from sin but bitterly complained about the sinfulness.


  So I find this law at work: Although I want to do good, evil is right there with me. For in my inner being I delight in God’s law; but I see another law at work in me, waging war against the law of my mind and making me a prisoner of the law of sin at work within me. (NIV Romans 7:21-23)


Of course John Calvin, Luther and all the reformers understood these verses by Paul was a description of his 'Christian' experience.

Sufficient to say there is no biblical warrant to suppose we can for a moment be without sin. If I ever met a person who loved God with all their heart, which is the greatest command, I would ask them to sign my bible and I would sell everything I have and follow that person.

Of course we know that would not happen as only Jesus was perfect.