When we try to live so that others see how perfect we are, we are missing the mark of how God wants us to live. Perfectionism encourages others to look at us. Trying to be more like God points the people around us to God and what He is doing in our lives. If our focus is ourselves, that is pride; and pride is a sin. If our focus is growing in our relationship with God, that is faith.
In 1946, the Dead Sea Scrolls (ancient copies of many of the books of the Old Testament) were discovered in a cave in Qumran. Inside, archaeologists found hundreds of scrolls that contained very few changes from the Word of God we have today.