Charles Spurgeon (1834-1892) was a man of Bible study, prayer, teaching and preaching. It has been estimated that he preached to about 10 million people.
Here is a great quote on prayer from C.H. Spurgeon: Of course the preacher is above all others distinguished as a man of prayer. He prays as an ordinary Christian, else he were a hypocrite. He prays more than ordinary Christians, else he were disqualified for the office which he has undertaken.
So prayer is an important aspect to our life.