The Rosary is tool to aid in prayer and if blessed can provide great help when praying your intentions.
To begin, pray the Rosary. While praying visualize your goal being accomplished by the power of Jesus Christ through the Blessed Mothers intercession. While praying the Rosary place your intentions in the middle of each Hail Mary:
"Hail Mary, full of grace, the Lord is with thee. Blessed art thou amongst women, and blessed is the fruit of thy womb, Jesus.
(Add your intention.) Holy Mary, Mother of God, pray for us sinners now and at the hour of our death. Amen."
Remember to name your intention after the word Jesus, so you can say it in a way that Jesus already did this for you in the past tense. For example, Who healed me of whatever ails me. Keep your intention brief, and understand in energy and power of God your prayer is being answered.
After you have finished the entire Rosary or just the five Mysteries for that day, conclude with this prayer:
"O most Sorrowful and Immaculate Blessed Virgin Mary,
Mother of God and Mother of men,
thou who wast found worthy to carry God himself in thy womb,
and thou who has crushed him who is at once the enemy
of God and man in common under thy heel. Humbly do I, N., approach thee,
through these Joyful (or Sorrowful. or Glorious) Mysteries of this thy Most Holy Rosary, asking that this offering may be acceptable to thee, and that thou wilt earnestly intercede on behalf of my petitions before the Father, namely that (here name your petitions).
Through our Lord Jesus Christ thy Son,
who with the Father liveth and reigneth
in the unity of the Holy Ghost, God,
forever and ever. Amen."
Recite daily until your intention is manifested. Remember to pray in the past tense as though your intention has already been manifested, and keep your eyes open for opportunities that can lead to exactly that.