Does this prayer make G-D alter His purposes? Prayer is good to the extent that it should produce good effects on mind and heart. That good effects must dispose our physical and intellectual qualifications in a way that thing prayed for should be attained.
There is no dearth of prayer in Muslim community. Yesterday was Shab-e-Barat and many people must have prayed many rikas of Nafl. But properly understood and applied prayer can be most effective way of realization