I received the Bulletin for the Association of the Miraculous Medal in the mail today. It had a good list of suggestions on how to pray the rosary more devoutly. Here are a couple I found particularly relevant to my crazy, busy life:
Before beginning, ask Mary to help you pray devoutly. If you are distracted during the rosary, just continue - don't stop or backtrack or repeat. After the rosary, offer it to Mary with your distractions - as a child offering a bouquet to her mother. Even if it is not perfect, it is offered with love.
If you are really busy, or if it is helpful, divide the rosary - one decade before breakfast, another at coffee break, and so on.