The rosary is designed for human nature, to occupy the mind with prayer, the mouth with words, the ears with hearing the words, the hands with the beads, even the feet with walking while praying. I suggest occupying your eyes with the Rosary Warfare book. With so many ways of being occupied by the rosary, you are less likely to be distracted and more likely to return your focus to prayer.Do what you can and ask Mary to perfect your prayers.
When starting, shut out all concerns, agitation, anything urging you to rush. Try to obtain peace internally and externally, then form fervent intentions and pray each word very fervently however fast or slow is easiest for you.
Each time you return to the rosary from distraction is a meritorious act, every single time. Just don't willfully look at or think about distractions.