"Some misunderstandings about prayer can be clarified by realizing that the scriptures define principles for effective prayer, but they do not assure when a response will be given. Actually, He will reply in one of three ways. First, you can feel the peace, comfort, and assurance that confirm that your decision is right. Or second, you can sense that unsettled feeling, the stupor of thought, indicating that your choice is wrong. Or third—and this is the difficult one—you can feel no response.
What do you do when you have prepared carefully, have prayed fervently, waited a reasonable time for a response, and still do not feel an answer? You may want to express thanks when that occurs, for it is an evidence of His trust. When you are living worthily and your choice is consistent with the Savior’s teachings and you need to act, proceed with trust. As you are sensitive to the promptings of the Spirit, one of two things will certainly occur at the appropriate time: either the stupor of thought will come, indicating an improper choice, or the peace or the burning in the bosom will be felt, confirming that your choice was correct. When you are living righteously and are acting with trust, God will not let you proceed too far without a warning impression if you have made the wrong decision."
Richard G. Scott, “Using the Supernal Gift of Prayer,” Ensign, May 2007, 8–11