Here is an excellent post by Vance Christie that will stretch your faith. Check out his web site at www.VanceChristie.com
“George Mueller has been a pacesetter for me in prayer. His Autobiography is an orchard of faith-building fruit. In one section he tells us, after forty years of trials, ‘how to be constantly happy in God.’ He said, ‘I saw more clearly than ever that the first great and primary business to which I ought to attend every day was to have my soul happy in the Lord.’ ” Piper then relates how that for ten years Mueller would go to prayer first thing in the morning, but often suffered from wandering thoughts for up to half an hour.