I found out about the Siddur Eit Ratzon (Season of Favor) from the Reform Shuckle blog just before High Holidays in 2010. I love this prayerbook. If it was affordable, I’d buy a hundred and make it the prayerbook of our congregation. You can get Siddur Eit Ratzon at newsiddur.org.
On page 3, in the introductory material, he describes what we experience in prayer as it is formulated in the Jewish prayer book. I reworded a few things slightly (so this is not exactly what Joseph Rosenstein had to say, but 80% the same):
IN PRAYER WE . . .
-Become aware of our blessings.
-Join the chorus of those who know the Giver of blessings.
-Find our individual voice in that chorus.
-Recognize many images of God in our experience of him.
-Understand the depths of God as Present & Personal but also Omnipotent & Transcendent.
-Recognize that God’s arm reaches into our lives in theory and in practice.