Empathy is one of the first steps toward humility.

When we see someone respond to a set of circumstances in a way that we disagree with, it often fills us with self-righteousness and impatience. Rather than get so indignant about what we can't identify with, we should start with what we can identify with.

Empathize with how they feel even if you can't identify with how they respond.

For example, a husband may get irritated with his wife because she cries and gets paralyzed when she's stressed. Instead, he should empathize with what it feels like to be stressed. He may not identify with crying (maybe stress causes him to be a workaholic) but identifying with how she feels will humble him and temper his irritation. The same dynamic applies to how a faithful believer views a flagrant sinner. You may not be able to identify with the particular sin, but you can most likely empathize with the temptation. That first step of empathy may not change your view of that sin but prayerfully it will change your approach to that person.

Ultimately, every Christian should continually empathize with the universal need for the grace of God in Christ. That should always make us humble people.