If we do not pray the Rosary regularly, I implore you to ask God for the grace to see its fruitfulness. Furthermore, consider the fact that every saint had a devotion to Mary, and countless saints had a great devotion to the Holy Rosary (e.g. Padre Pio, Teresa, Dominic, Francis Xavier, Francis Borgia etc.). If this does not convince you of its efficacy, please read the masterpiece, ‘The Secret of the Rosary’ by St. Louis de Montfort, which proves (beyond a shadow of a doubt) that the Rosary is an indispensable prayer if we wish to grow in sanctity and bring souls to God. If you have reservations regarding devotion to Mary, don’t worry; your good will suffices; God will take care of everything. This book can be found free online here:
http://www.rosary-center.org/secret.htm
or for purchase (approx. AUD $6) here:
http://www.bookdepository.com/Secret-Rosary-St-Louis-Mary-Grignion-De-Montfort/9780899421087
Excerpt taken from ‘The Secret of the Rosary’:
“St. Augustine assures us that there is no spiritual exercise more fruitful or more useful than the frequent reflection on the sufferings of our Lord. Blessed Albert the Great, who had St. Thomas Aquinas as his student, learned in a revelation that by simply thinking of or meditating on the passion of Jesus Christ, a Christian gains more merit than if he had fasted on bread and water every Friday for a year, or had beaten himself with the discipline once a week til blood flowed, or had recited the whole Book of Psalms every day. If this is so, then how great must be the merit we can gain from the Rosary, which commemorates the whole life and passion of our Lord?
Our Lady one day revealed to Blessed Alan de la Roche that, after the holy sacrifice of the Mass, which is the first and most living memorial of our Lord’s passion, there was indeed no more excellent devotion or one of greater merit than that of the Rosary, which is like a second memorial and representation of the life and passion of Jesus Christ.
Fr. Dorland relates that in 1481 our Lady appeared to the Venerable Dominic, a Carthusian devoted to the holy Rosary, who lived at Treves, and said to him:
“Whenever one of the faithful, in a state of grace, says the Rosary while meditating on the mysteries of the life and passion of Christ, he obtains full and entire remission of all his sins.”
She also said to Blessed Alan, “I want you to know that, although there are numerous indulgences already attached to the recitation of my Rosary, I shall add many more to every five decades for those, who free from serious sin, say them with devotion, on their knees. And whosoever shall persevere in the devotion of the holy Rosary, with its prayers and meditations, shall be rewarded for it; I shall obtain for him full remission of the penalty and the guilt of all his sins at the end of his life.
“And let this not seem incredible to you; it is easy for me because I am the Mother of the King of heaven, and he calls me full of grace. And being filled with grace, I am able to dispense it freely to my dear children.”
St. Dominic was so convinced of the efficacy of the Rosary and its great value, that when he heard confessions, he hardly ever gave any other penance, as we have seen in the story I told you of the lady in Rome to whom he gave only a single Rosary.”
Littlest Souls 