How is prayer aswered in the best way?

Prayer is answered in the best way for the one who prays, not always perhaps the pleasantest or easiest, but as every event in life is but one incident in the whole, it is best, in the sense of its effect on the life as a whole, its result on character, the lessons it teaches, the experience it gives, and so forth. 

Also, you must remember earth's limitations make it impossible for all prayers to be answered exactly as desired. 

For instance, in the case of a child under certain painful conditions of disease, its father, though loving it dearly, might pray for its death, feeling life would be too hard for it under the circumstances, while its mother might pray fervently, for it to live—obviously, they could not both have their desires fulfilled.