In high school I had a wonderful teacher who was a mentor for me. She would often say, "Be good." Even though it sounds so simple, it sums up the essence of the Christian life. By being good we can act with goodness toward others. The way we act reveals what is in our hearts. And by good acts, we become better persons. That was the main idea St John Paul wanted to get across in his book Person and Act. The opposite is also true; if we do evil things our heart changes and is drawn more to evil. But the power of good is greater; whatever little good we do can turn our hearts more and more to God, who is Goodness itself.
St. Paul often encouraged his Christians to be good: "I myself feel confident about you, my brothers and sisters, that you yourselves are full of goodness..." (Rom 15:14).
The Holy Spirit is the source of our goodness, for the Spirit is Love. When we open ourselves more fully to the Spirit, we can expect to be filled with an abundance of grace and spiritual gifts.
How can I show goodness to others today?
Prayer for Holiness of Life
By St. Augustine
Breathe in me, O Holy Spirit,
that my thoughts may all be holy.
Act in me, O Holy Spirit,
that my work, too, may be holy.
Draw my heart, O Holy Spirit,
that I may love only what is holy.
Strengthen me, O Holy Spirit,
that I may defend all that is holy.
Guard me, O Holy Spirit,
that I always may be holy.
And here is the traditional Come, Holy Ghost: