What is the secret to having your prayers answered?

Prayer is the most wonderful experience one can have. Unlike the daily murmurings of the vast majority of mankind in all lands who, by their vain repetitions, hope to gain the ear of God, prayer is the ecstasy of a spiritual wedding taking place in the deep, silent stillness of consciousness.

Have you ever had a prayer answered? What wouldn't we give just to feel certain that when we pray, something definite would happen? For this reason, I would like to take a little time to see why it is that some prayers are answered and some apparently fall on dry ground.