Lord Jesus, teach me to pray with all my heart and strength so clearly that there may be no doubt as to what I have asked. May I know what it is that I desire so that when my petitions are recorded in heaven, I can record them on earth too, and note each answer when it comes. And may my faith in what your Word has promised be so clear that the Spirit may indeed work in me liberty to will that it come to pass. Lord, renew, strengthen, and sanctify wholly my will for the work of effective prayer.
Taken from the book Teach Me to Pray by Andrew Murray 1828-1917