All the teachings of Jesus in the New Testament are positive and empowering. He never said "do not try this at home." Instead, He said "greater than these things shall you do," and "it is done unto you as you believe."
So after we do our prayer work, why don't we receive whatever it is we asked for? Is it because God is on vacation in the Bahamas? Or because we are up to our limit on good this month? Absolutely not.