Salvation in Christ is not essentially about sin. God does not save you because you throw away your sin, or because you are able to stop sinning. Salvation is about your yielding to Him in repentance. Big difference.
Being faithful, little by little
Faithfulness is a process. We live, we try, we fail, we sin – but the faithful then repent, turn to God again, and move on in faith. The faithful are little-by-little-faithful. No person on earth is totally faithful to God all at once. They are not sinless. They are not saved in the end because they sinned less than “the other guy”. Does the way you live – show that you “love the Lord your God with all your heart”? Is your heart on the altar – 100%? Or is your heart cracked?