The customary observance of the first Friday of each month was encouraged by the Catholic Church, based on a promise made to St. Margaret Mary of Alacoque, that special favors, such as the grace of final perseverance, would be given to those who received Holy Communion on nine successive first Fridays.
After purifying St. Margaret Mary by many trials, Jesus appeared to her in numerous visions, displaying to her His Sacred Heart, sometimes burning as a furnace, and sometimes torn and bleeding on account of the coldness and sins of men. Here’s a quote from St. Margaret Mary, “And He showed me that it was His great desire of being loved by men and of withdrawing them from the path of ruin into which Satan hurls such crowds of them, that made Him form the design of manifesting His Heart to men, with all the treasures of love, of mercy, of grace, of sanctification and salvation which it contains, in order that those who desire to render Him and procure for Him all the honor and love possible, might themselves be abundantly enriched with those divine treasures of which this heart is the source. He should be honored under the figure of this Heart of flesh, and Its Image should be exposed. 
He promised me that wherever this image should be exposed with a view to showing It special honor, he would pour forth His blessings and graces. This devotion was the last effort of His love that He would grant to men in these latter ages, in order to withdraw them from the empire of Satan which He desired to destroy, and thus to introduce them into the sweet liberty of the rule of His love, which He wished to restore in the hearts of all those who should embrace this devotion.”
Our Lady of Fatima told Sister Lucia at the Cova da Iria that she wanted the first Saturday of each month, be set aside by all as a day of reparation to her Immaculate Heart. On December 10th, 1925 Our Lady again appeared to Sister Lucia while she was in her room at the convent. The child Jesus was at Our Lady’s side elevated upon a cloud of light. Our Lady held in her hand a heart surrounded with sharp thorns. The Child Jesus spoke first to Lucia:
“Have pity on the Heart of your Most Holy Mother. It is covered with the thorns with which ungrateful men pierce it at every moment, and there is no one to remove them with an act of reparation.”
Then Our Lady said to Lucia: “My daughter, look at my Heart encircled with the thorns with which ungrateful men pierce it at every moment by their blasphemies and ingratitude. Do you at least try to console me and announce in my name that I promise to assist at the hour of death with the graces necessary for salvation all those who, on the first Saturday of five consecutive months, go to Confession and receive Holy Communion recite the Rosary and keep me company for a quarter of an hour while meditating on the mysteries of the Rosary with the intention of making reparation to me.”
This is what Our Lord and Our Lady asked us to do. If you can’t make it to Mass, which is how you receive the promises, due to the distance and/or financial hardship in getting to Mass or if you are a shut-in, then make a Holy Hour in your home. You may ask, what do you need for this Holy Hour and what does a Holy Hour consists of? It’s simple. First, you need a crucifix and your rosary. Next, you pray the rosary with that month’s intentions in mind (Magnificat Media/Radio provides), you meditate on the crucifix and especially the Sorrowful Mysteries, say some extra prayers, read the Psalms, or simply speak from your heart to Jesus and Mary.
This will last for one hour. You can do this alone or you can invite friends and neighbors to join you in this Holy Hour Crusade. If we want to make this world right again we must go to the one Who created it, God. God will fix the world through our reparation of sacrifices and prayers.
Here’s how you can help if you can’t make it to Mass: Holy Hour in your home