There are two kinds of prayer. One is for a particular person, and the other for the realization of a public purpose. If the person you pray for does not respond, his blessing will be transferred to you. Your prayer for the public purpose will shorten the time of Judgment. Prayer is like a deepwater urn.
Prayer is like the air of our spiritual life.
When you pray to Heaven, it must be with the pure heart of a child asking his own father. Pray to God, being aware of your own sin. If you dominate the spirit world and are in accordance with the Principle, you will become confident. If you pray, you will never feel lonely, even if you are alone. Prayer is like breathing.