Scripture says, "Those who are led by the Spirit of God are sons of God" (Romans 8:14). The childlike privilege of asking for anything is inseparable from the childlike life under the leading of the Spirit. The one who yields himself to be led by the Spirit in his everyday life will be led by Him also in his prayers. He will find that father-like giving is the divine response to childlike living.
Taken from the book Teach Me to Pray by Andrew Murray 1828-1917