How many times have I heard Christians praying for specific results? It's as if they were trying to tell God his business. The more specific the prayer, the more it's like a test. And it is never our business to test God in any way.
You can sit in front of a can of beans and pray for God to open it for hours on end. You may indeed get the can opened as friends come by who happen to have a can opener. But it is pretty much guaranteed that the can will not miraculously pop open in response to your prayers. God just does not work that way very often.
But who is to say when your friend comes by with the can opener in his pocket that it's not God's work? Prayers are answered in many ways. And we are all in His service.