I try to say a rosary every day, usually during the morning "Dusty walk" or a solo car trip (hah!). I say a little prayer or at least think a bit about each mystery. The luminous ones speak the most to me these days, maybe because they're about Jesus' adult days or because they're "newer".
My favorite is the second, Jesus' miracle at the wedding at Cana. I think about how marriage must be so dear to our Lord, since this was his first public miracle. I pray in thanksgiving for my good marriage, and in petition for marriages and relationships that I know are hurting. I also pray for marriages to come, especially for my children and their future spouses.
What's your favorite mystery?