“But the fruit of the spirit is love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, self-control.” (Galatians 5:22). How do we get these character qualities? God does not one day zap us. There is a process.
God has a part and we have a part in the process. In a physical workout you develop or tone the muscles God has given you. Paul urges us to cultivate our spiritual lives. God provides the power.