"God is love.
Whoever lives in love lives in God,
and God in them."
(1 John 4:16)
by US Grace Force
By this power of the Spirit, God's children can bear much fruit. He who has grafted us onto the true vine will make us bear "the fruit of the Spirit: . . . love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, self-control."
"We live by the Spirit"; the more we renounce ourselves, the more we "walk by the Spirit."
Fruits of the Holy Spirit:
Supernatural works that, according to St. Paul, manifest the presence of the Holy Spirit. The one who performs them recognizes God's presence by the happiness he experiences, and others the divine presence by witnessing these good works (Gal 5:22-23). They are, in other words, identifiable effects of the Holy Spirit.
In the Vulgate text they are: charity, joy, peace, patience, benignity, goodness, longanimity, mildness, faith, modesty, continency, and chastity.
(Fr. John Hardon, Modern Catholic Dictionary)
Fruit of the Spirit and fullness of the Law, charity keeps the commandments of God and his Christ:
"Abide in my love. If you keep my commandments, you will abide in my love." (CCC 1824)