According to Catechism of the Catholic Church, Part 3, Sect 1, Ch. 1, art. 7:33. p. 1832,
"The fruits of the Spirit are perfections that the Holy Spirit forms in us as the first fruits of eternal glory.
The tradition of the Church lists twelve of them:
"charity, joy, peace, patience, kindness, goodness, generosity, gentleness, faithfulness, modesty, self-control, chastity."
The Holy Spirit is Love and gives us the infused theological virtue of charity to prefer God over everyone and everything.
When one is close to God, everything else falls into its place so that one can have patience and tranquility. Love is patient.
Longanimity. Perseverance in the mission God has given us and the ability to stay faithful over the long time.
Modesty. This includes how we act and dress. These are external signs of our interior modesty. It gives us the preference to purity of mind and heart in sexual matters.
Happiness is realized when we live for God and know someday we will be with Him now and forever in heaven.
Benignity. This is the virtue of kindness to others.
Mildness. This gives us the moral virtue temperance that helps us overcome our natural tendency to be rough or angry.
Continency. This is the virtue to control sexual and other appetites in a holy manner like in marriage when one spouse because of sickness can not have relations.
The Holy Spirit gives us order in our souls and a clean conscience. He also gives us order to our family, friendships and duties of life.
We renounce evil and seek what is good. We repent of our sins and strive to do God’s will.
Faith. This is a theological virtue given to us in Baptism. It gives us the Divine grace to be able to assent to the revealed truth of God. We put God as the absolute authority.
Chastity. This is the self giving of oneself to God completely as a priest,religious or consecrated layman. All vocations are called to have chastity in their way of living, including married people to be faithful to their spouses. It also gives the grace for all those waiting to get married to be sexually pure.