If you're a follower of Jesus you have a story and your story can inspire others to follow Jesus as well.
We all share common struggles. When we're open and honest in sharing how God is bringing us through our struggles and being faithful to His promises, He can use our story to encourage, inspire, and ignite the faith of others
Paul shared his struggle of self-righteousness with fellow believers and then told them how God changed his perspective; his confidence was now in God's ability to forgive instead of his own ability to obey.
Paul's story is still leading people to Jesus and encouraging fellow believers to this day!