The Sacred Heart in the Spiritual Life
Devotion to the Sacred Heart is a wonderful historical expression of the Church's piety for Christ, her Spouse and Lord: it calls for a fundamental attitude of conversion and reparation, of love and gratitude, apostolic commitment and dedication to Christ and his saving work.
Devotions to the Sacred Heart of Jesus are numerous. Some have been explicitly approved and frequently recommended by the Apostolic See. Among these, mention should be made of the following:
Personal consecration, described by Pius XI as "undoubtedly the principal devotional practice used in relation to the Sacred Heart" (Miserentissimus redemptor).
Family consecration to the Sacred Heart, in which the family, by virtue of the Sacrament of Holy Matrimony already participating in the mystery of the unity and love of Christ for the Church, is dedicated to Christ so that he might reign in the hearts of all its members (Aliae concessiones).
Litany of the Sacred Heart of Jesus
The Litany of the Sacred Heart of Jesus, approved for the whole Church in 1891, which is evidently biblical in character and to which many indulgences have been attached (Aliae concessiones).
Act of Reparation to the Sacred Heart
The act of reparation, a prayer with which the faithful, mindful of the infinite goodness of Christ, implore mercy for the offences committed in so many ways against his Sacred Heart (Aliae concessiones).
The Practice of the First Fridays
The pious practice of the first Fridays of the month which derives from the "great promises" made by Jesus to St. Margaret Mary. At a time when sacramental communion was very rare among the faithful, the first Friday devotion contributed significantly to a renewed use of the Sacraments of Penance and of the Holy Eucharist. In our own times, the devotion to the first Fridays, even if practised correctly, may not always lead to the desired spiritual fruits. Hence, the faithful require constant instruction so that any reduction of the practice to mere credulity is avoided and an active faith encouraged so that the faithful may undertake their commitment to the Gospel correctly in their lives. They should also be reminded of the absolute preeminence of Sunday, the "primordial feast" (Sacrosanctum Concilium), which should be marked by the full participation of the faithful at the celebration of the Holy Mass.
Excepted from the Directory on Popular Piety and the Liturgy