Continue in prayer, and watch in the same with thanksgiving.
I have met Christians who insist that it is wrong to pray for the same thing twice, the reason being that if we truly believe when we pray we have the answer the first time; any second prayer betrays the unbelief of the first!
There are three things wrong with this teaching. One is that it ignores a large body of Scripture; the second is that it rarely works in practice, even for the saintliest soul; and the third is that, if persisted in, it robs the praying man of two of his mightiest weapons in his warfare with the flesh and the devil—intercession and petition.
For let it be said without qualification that the effective intercessor is never a one-prayer man, neither does the successful petitioner win his mighty resources in his first attempt!
It must be noted that such a teaching will very often result in an unconscious spiritual pride.
One has but to note the smug smile of superiority on the face of the one-prayer Christian to sense that there is a lot of pride behind the smile. While other Christians wrestle with God in an agony of intercession they sit back in humble pride waiting it out. They do not pray because they have already prayed. The devil has no fear of such Christians. He has already won over them, and his technique has been false logic.