As the books of Job, Jeremiah, and Habakkuk clearly show, God has a high threshold of tolerance for what appropriate to say in a prayer. God can "handle" my unsuppressed rage. I may well find that my vindictive feelings need God's correction - but only by taking those feelings to God will I have the opportunity for correction and healing.
Thanks to the scientific method, most people in "developed" countries have an outlook of mild deism. We assume things like weather and disease operate according to fixed natural laws. Every so often, though, problems impinge on us so directly that we stretch beyond that mildly deistic stance and ask God to intervene. When a drought drags on too long, we pray for rain. When a young mother gets a diagnosis of cervical cancer, we solicit prayers for her healing. We beseech God as if trying to talk God into something God otherwise might not want to do.
prayer, and only prayer, restores my vision to one that more resembles God's. i awake from blindness to see that wealth lurks as a terrible danger, not a goal worth striving for; that value depends not on race or status but on the image of God every person bears; that no amount of effort to improve physical beauty has much relevance for the world beyond.