Proper prayers flow from faithful, obedient hearts bringing to God real needs that we beg him to meet. His answer may be “Yes, here and now, as requested,” or “Yes, but in a better way than you asked,” or “Yes, but you must wait—I will take the right action at the right time, which is not yet.”God, the perfect Father, loves to give good gifts to his children but reserves the right to give only the best, and only in the best way. What he gives, therefore, is not always what the praying believer had in mind.
JI Packer, Pointing to the Pasturelands, p.303