Our Father in heaven knows what we have need of even before we ask, and knows what is best for us better than we know ourselves. The Lord will not act against the freewill that He has given each and everyone of us. Earnest prayer opens the way and gives God the consent He needs to do what He desires in a believer's life.
Prayer can change lives drastically.
When we pray individually, we can work miracles for ourselves and those we touch with our prayers. When we pray collectively for His will to be done, Christians can change the course of history. Prayer will stem the tide of evil. Our church places great emphasis on prayer. Prayer in worship, thanking Him for His wisdom, power, and grace and praising Him for His goodness.