I used to find it boring to pray the breviary and the rosary. Both consist of prepared words--nothing is extemporaneous--and the rosary in particular is very repetitive.

The paradigm shift for me was to imagine that I am saying them in the presence of the One to whom I am praying, which in fact is what is really happening. I imagine God to be listening with a satisfied air as I recite his praises and glories.

Reciting prayers becomes a lot more meaningful when you realize that someone is listening to them, someone is enjoying them.