To build on what Caroline was saying, when I say the Rosary, I have one scripture-based sentence for each bead... for example, today is Tuesday, and on Tuesday we say the Sorrowful Mysteries, so I'd say something like this with each bead:
(First Sorrowful Mystery: the Agony in the Garden)
First bead (out loud): Jesus comes to Gethsemane to pray with His disciples. "Stay here, while I go yonder and pray".
Hail Mary, full of grace...
Second bead (out loud): Entering the garden with Peter, James, and John, Jesus prays, "My soul is sorrowful unto death."
Hail Mary, full of grace...
Third bead (out loud): Jesus sees the sins of all mankind, whose guilt He has taken upon Himself.
Hail Mary, full of grace...
Fourth bead (out loud):He sees the wrath of the Father which His sufferings must appease.
Hail Mary, full of grace...
Fifth bead (out loud):So great is his anguish that His sweat becomes as drops of blood falling to the ground.
Hail Mary, full of grace...
Sixth bead (out loud):An angel appears to Him from heaven to strengthen Him.
Hail Mary, full of grace...
Seventh bead (out loud):"Father, if it be possible, let this cup pass from Me; yet, not My will, but Yours be done."
Hail Mary, full of grace...
Eighth bead (out loud):Finding the disciples asleep, He says, "Could you not watch one hour with me?"
Hail Mary, full of grace...
Ninth bead (out loud):Jesus is betrayed by Judas, cruelly bound and led away.
Hail Mary, full of grace...
Tenth bead (out loud):Father, by the merits of the agony of Jesus in the Garden, have mercy on us and on the whole world.
Hail Mary, full of grace...
That's just an example, which I pulled from
http://www.rosary-center.org/howto.htm. By going through the mystery sentence by sentence, it enables me to concentrate on meditation, and as I pray the
Hail Mary, I visualise the scene and contemplate its significance.
Maybe that would help you. I know it certainly helps me to focus!