"Therefore wait upon Me, says the Lord." Zephaniah 3:8

In praying, we are often occupied with ourselves, with our own needs, and our own efforts in the presentation of them. In waiting upon God, the first thought is of the God upon whom we wait. God longs to reveal Himself, to fill us with Himself. Waiting on God gives Him time in His own way and divine power to come to us. Before you pray, bow quietly before God, to remember and realize who He is, how near He is, how certainly He can and will help. Be still before Him, and allow His Holy Spirit to waken and stir up in your soul the child-like disposition of absolute dependence and confident expectation.

Wait on God till you know you have met Him; prayer will then become so different. And when you are praying, let there be intervals of silence, reverent stillness of soul, in which you yield yourself to God, in case He may have something He wishes to teach you or to work in you.

by Andrew Murray (known as one of the greatest men of prayer)