Prayer can assume very different forms, from quiet, blessed contemplation of God, in which eye meets eye in restful meditation, to deep sighs or sudden exclamations of wonder, joy, gratitude or adoration.
God alone fully understands what each one of us needs; we make mistakes continually and pray for things which would be harmful to us if we received them. Afterwards we see our mistakes and realize that God is good and wise in not giving us these things, even though we plead ever so earnestly for them.