In Christian belief, prayer must be directed through an intermediary. In Judaism, prayer is a totally private matter, between each individual and G-d. Lastly, in Christianity, the physical world is viewed as an evil to be avoided. Mary is portrayed as a virgin. Priests and nuns are celibate.
Monasteries are in remote, secluded locations.
In Judaism, the belief is that G-d created the physical world not to frustrate us, but for our pleasure. Jewish spirituality comes through grappling with the mundane world in a way that uplifts and elevates. Sex in the proper context is one of the holiest acts we can perform. Jewish rabbinical schools teach how to live amidst the bustle of commercial activity. Jews don't retreat from life, we elevate it.