As we mature in Christ we will find ourselves more sensitive to the presence of sin in our lives, noticing “minor” transgressions that were once easily overlooked. This in turn should make us more vigilant to do what is necessary to prevent bitterness and other invisible sins from welling up within us. Let not your growing awareness of your own sinfulness discourage you. Instead, arm yourself to fight your flesh more effectively with such knowledge.
For further study:
The Bible in a year: