One religious mindset that many Christians can be guilty of -- we are trying to change our old nature (old man) and improve ourselves. We fail to realize that Jesus never came to do that. Jesus crucified the old man so that by faith, we can walk in the new man who is already created in righteousness and holiness, thereby permitting Him to live through us.
"I have been crucified with Christ; it is no longer I who live, but Christ who lives in me; and the life I now live in the flesh I live by the faith of the Son of God, who loved me and gave Himself for me." - Galatians 2:20 KJV
"I have been crucified with Christ; it is no longer I who live, but Christ who lives in me; and the life I now live in the flesh I live by the faith of the Son of God, who loved me and gave Himself for me." - Galatians 2:20 KJV