The How to Pray book, written by R.A. Torrey at the beginning of the previous century, is still very much relevant today to teach any christian what his or her prayer life should be like and what can really be accomplished with a prayer life that God wants christians to have. The following is an excerpt from the book dealing with the topic of “always praying and not fainting”, i.e. prayer with determination:
God does not always let us get things at our first effort. He would train us and make us strong men by compelling us to work hard for the best things. So also He does not always give us what we ask in answer to the first prayer; He would train us and make us strong men of prayer by compelling us to pray hard for the best things. He makes us PRAY THROUGH.
I am glad that this is so. There is no more blessed training in prayer than that that comes through being compelled to ask again and again and again even through a long period of years before one obtains that which he seeks from God. Many people call it submission to the will of God when God does not grant them their requests at the first or second asking, and they say:
“Well, perhaps it is not God’s will.”
As a rule this is not submission, but spiritual laziness. We do not call it submission to the will of God when we give up after one or two efforts to obtain things by action; we call it lack of strength of character. When the strong man of action starts out to accomplish a thing, if he does not accomplish it the first, or second or one hundredth time, he keeps hammering away until he does accomplish it; and the strong man of prayer when he starts to pray for a thing keeps on praying until he prays it through, and obtains what he seeks. We should be careful about what we ask from God, but when we do begin to pray for a thing we should never give up praying for it until we get it, or until God makes it very clear and very definite to us that it is not His will to give it.
You can read more about the How to Pray book here: