Why do some Christians struggle with self-righteousness?

Self-righteousness among Christians often stems from the natural tendency to seek validation through personal accomplishments or adherence to religious rules. As highlighted in passages such as Luke 18:9-14, the Pharisees exemplify this mindset, believing themselves righteous because of their strict observance of the law while despising others. This attitude prevents them from recognizing their need for the grace that comes through faith in Christ. The gospel calls us to abandon self-reliance and recognize that it is only through Christ's imputed righteousness that we stand justified before God. A proper understanding of the gospel fosters humility, which counters the pride that fuels self-righteousness.