I have long enjoyed and admired A.W. Tozer, in particular his book The Pursuit of God. We have taught it in our churches and introduced its insights to those who appreciate the simple and wise introspective of one of the LORD's elders. It is a wonderful read available in several places on the internet and readily available in book form from several retailers. The following is the introduction of chapter one.
Christian theology teaches the doctrine of prevenient grace, which briefly stated means this, that before a man can seek God, God must first have sought the man.
Before a sinful man can think a right thought of God, there must have been a work of enlightenment done within him; imperfect it may be, but a true work nonetheless, and the secret cause of all desiring and seeking and praying which may follow.
We pursue God because, and only because, He has first put an urge within us that spurs us to the pursuit. "No man can come to me," said our Lord, "except the Father which hath sent me draw him," and it is by this very prevenient drawing that God takes from us every vestige of credit for the act of coming. The impulse to pursue God originates with God, but the out working of that impulse is our following hard after Him; and all the time we are pursuing Him we are already in His hand: "Thy right hand upholdeth me."