To expand, (I am Roman Catholic):
There are many prayers of the Roman Catholic Church, however many have fallen into disuse for the parish laity, so that it has been practically reduced to celebrating the Sacraments for many people. Matins and Vesper services come to mind, as well as lots of the blessings for houses, children, cars, etc.
In our private prayer life, ideally we should continually pray to God. I often fail to pray to God however, when I am doing my work (or posting here!
). We do also have the "prayer" to the Saints, but ideally it is the same as asking any of you to pray for us to God, since the Saints are not dead but alive. Of course there are distortions such that, especially, Mary is the one prayed to and Jesus is forgotten, but that is not what is expected.
In the Roman Catholic tradition, there is also a long series of people that have written that offering your daily work to God makes it the same as a direct prayer to God. Whether this is true, I do not know. In the Eastern Catholic Churches, I believe they have generally kept the necessity of the continuous prayer of the heart similar to Orthodoxy, and have a similar prayer life.
The mystical theologians, especially the Carmelites St. John of the Cross and St. Teresa of Avila, have written about the mystical union between the soul and God, the highest stage of prayer, as a mystical marriage. Orthodox wouldn't like it being put that way, being too romantic and a host of other things, but I believe that is the same as the later stages of theosis. In any case it is, we believe, a pure gift from God to reach that state; the soul can only do so much to prepare for it by mental prayer and mortification, and God has to grant the rest through what is called the "dark nights of the sense and spirit". This is where God denies any sensory or spiritual consolations so that the soul is forced to seek Him purely for who He is, rather than what He does. Although that is the goal for all of us Catholics, few reach it, and probably the nature of this state is such that no one would know that someone had reached it, being a state of near-perfect humility above all things. It is also said no human language can express what it is to be in this mystical union, and I only know of it from what I have read, so I doubt I have expressed it properly.