On Getting Along by Ourselves in Christ
Heeding God's Word in Galatians 6:1-5, especially verse 4, that we should have gladness in our own proven works instead of glorying in others is to heed a commandment against the perversion that comes from over-judgement of others' evil that makes us feel good about our own works by comparison and also of relying on another's praise of our works. It is a practical psychological help to live in our own successes and not be over-burdened with the evil of another or with the praise from another.
This is not to say that we should neglect our siblings in Christ. The spiritual ones among us have the work of restoring the sinning sibling, but even that job is with a warning to watch that we are not overcome by the same sin when we do it. Even though this work exists, we still should live in our own works and not those of others from either a positive or a negative point of view.