Journeyman,
Let me begin by saying something which I rarely do. I personally believe that God listens to prayer.
However, Judaism is not a religion. We are a tribe, a community. We thus have a spectrum of beliefs. Asking "what do Jews believe" is like asking "what do Italians believe." You are born Italian as you are born Jewish. Just like there is Italian food, there is Jewish food. It's not specifically a religion. There are religious groups within, but the ideas vary. Get it?
Think of it this way. Is there JW food? No. It's a religion. There's Jewish food because we're a culture, a civilization.
Mr Peacefulpete likes to quote things from various Jewish sources as if they are representing my people, but it's a butcher job. Like Americans have a spectrum of beliefs, so do Jews. I can't help much either because I keep using words like "liturgy" and "spectrum" and you folks aren't much experienced with what I am saying. You keep giving me Jesus, someone from an Imperialist system, not from my world. You don't know the vast difference.
Jesus comes from Rome, not just the Catholic Church. The Jesus from the Gospels is not a Jewish work but an Imperialist one, a representation of the official state religion of a once great empire. That Jesus is no longer the one that walked or sounds like the rabbi who came from Judea. The Jesus from the Gospels is a God.
That aside: some of Jesus' prayers can still be found among the wording and do indeed seem to come from Judaism. There are schools of thought that resemble Hillel, for example.
The Golden Rule, for instance, seems to be a quote from Hillel: "What you do not wish to do be done to you, do not to do others." Jesus merely said it in the positive (or his disciples reworked and ascribed it to Jesus).
The "Our Father" of Matther 6 comes from bits and pieces of the Jewish liturgy. Hallowed be thy name from the Kaddish prayer where Jews pray "qadosh, qadosh, qadosh" or "holy, holy, holy" in reference to God’s name, meaning "May his great name grow exalted and glorified," as some have rewritten the prayer over the centuries.
I can go on, but there is a perfectly good resource out there. The Jewish Annotated New Testament, Second Edition.
Now...I do not, like Peacefulpete says, imagine that the Old Testament prayers were some "psychological tools for self help." They meant what they said, in the genre that they were composed, but words mean what they mean. People in the past believed that they talked to deities, not merely worshiped them.
He got that very wrong indeed.
Peacefulpete doesn't understand what I mean or comprehend where I come from. He thinks he does. And that is the problem--believing you know something and teaching others about the subject when you don't.
Offering to help others with abilities you do not possess is like offering to feed the hungry from empty pots.
I really hate that the Watchtower taught so many people to debate in a cut-and-paste way from blurbs found from "sources." It’s horrible. The correct way is to build an argument and to demonstrate the way it works, not by quotes from others, but merely a demonstration that your logic is sound within itself.