Jensen's first talk on Psalm 115 was very helpful.
I also appreciate what I have read in the linked article from Christianity Today. Here is a little of what the author, Ben Patterson had to say
... prayer is more than a means to get God to give us what we want. It is a means he uses to teach us to want what he wants. Holy Scripture in general, and the Psalms in particular, teach us who God is and what he wants to give.
When the members of his synagogue complained that the words of the liturgy did not express what they felt, Abraham Heschel, the great philosopher of religion, replied wisely and very biblically. He told them that the liturgy wasn't supposed to express what they felt; they were supposed to feel what the liturgy expressed. To be taught by the Bible to pray is to learn to want and feel what the Bible expresses.
Those who practice this kind of prayer over time make a surprising discovery: As they learn to feel what the Psalms express, their hearts and desires are enlarged. They find that what they once regarded as strong desires were actually weak, puerile little wishes, debased inklings of what is good. Of course! Would not the God who made us in his own image understand better than we ever could what we really need? And shouldn't we ask him for it? As C. S. Lewis put it in "The Weight of Glory":
Indeed, if we consider the unblushing promises of reward and the staggering nature of the rewards promised in the Gospels, it would seem that Our Lord finds our desires not too strong, but too weak. We are half-hearted creatures, fooling about with drink and sex and ambition when infinite joy is offered us, like an ignorant child who wants to go on making mud pies in a slum because he cannot imagine what is meant by the offer of a holiday at the sea. We are far too easily pleased.