Is a Life Without Sinning Possible?
No.
And the Bible disagrees wth you.
1 Peter 4:1 says they that have suffered in the flesh have ceased (stopped) from sin.
Galatians 5:24 says that they that are Christ's have crucified the flesh with affections and lusts.
Peter identifies certain false prophets as having eyes full of adultery who cannot cease from sin (2 Peter 2:1, 14).
Jesus says be ye perfect as your heavenly father is perfect (Matthew 5:48).
Paul says that if any man teaches contrary to the words of Jesus Christ and the doctrine of Godliness is proud and they know nothing (1 Timothy 6:3-4).
John says he that says he knows him and does not keep his commandments is a liar and the truth is not in them (1 John 2:4).
Jesus told the woman caught in the act of adultery to .... "sin no more." (John 8:11).
Jesus defined repentance for us in the Bible. Jesus said the Ninevites will rise up in Judgment against this generation because they repented at the preaching of Jonah. If you were to turn to Jonah chapter 3, you would learn that they turned from their wicked and evil ways as a part of their repentance (Matthew 12:41) (Jonah 3:8-10).