That is really physically taxing even to read it. I guess if we were thinking about being desperate we are talking about the depth of the soul being effected by the depth of the desperation. In order for grace to be added it must replace weakness and desperation.        People experience desperation in a loss of a loved one, in a trial. But really true desperation in its deepest sense originates from within. It is the darkness of the human heart with an overbearing sense of dread and helplessness. It really involves a speechless inward blackness that no other physical pain can match.
There really is no where to turn in that disposition except to a cry for help. There really are no feelings left to depend upon. There is nothing to say except help me. And in that crying maybe one day a hope will arise in the heart and will drive out that emptiness and blackness. In the cry in desperation is an outlet for that glimmer of hope. Then seeing that God has hidden Himself that drives out mans self determination and confidence. Its  a very big difference between a cry from the heart of a self confident person and a cry from the heart of a desperate person. First a desperate person realizes that the cry to God for help is only going to end in the return of the desperation, and maybe even more depths of desperation. So is a sense the cry for help leads to a more desperate disposition. Maybe this experience is put into the human physic in order to drive the sense of helplessness deeper into the heart through experiencing levels of desperation.
I mean if you begin being desperate, and you think that is all there is and then you begin to smart from that desperation and you cry out to God for help, for grace, but then the experience of desperation is just beginning and so you are brought down in experiencing more desperation as it were increasing your helplessness. Well that decline is what brings about a much deeper cry from the heart. A much more sincere cry. The sincerity of the cry equals the level of the desperation.
In meditation there is a sense of what can happen when a person goes down into the depths of desperation in order for God to teach him not to trust in himself. In meditation there is a focus on Christ as Savior so that the deep level of the desperation brings about the realization of an answer from a persons cry that makes that  answer more supernatural in the desperation. The supernatural element in deep desperation comes in the focus on Christ in the scripture, and Christ becomes more important than the desperation or the life of the person.Although in response to that supernatural sustaining God leaves nothing to the person to glory in himself because of the level of the desperation and its continuance convinces a person not to rely on self feelings. In desperation what is more important than the feelings is the actual words and promises of God that are written down. So that these cries and focus actually bring about a sustaining of a person in the desperation as if a person were under water receiving oxygen from a tank in order to continue to live. If we learn from our desperation, to tarry long in the word, holding onto every promise, looking for deliverance, waiting for Christ to speak peace to us, all of these things that are overshadowed by the sense of deep desperation will sustain us even tho we do not have a sense of Christ being near. See, there is a lesson of faith that can only be learned in helplessness. There are more unseen and unfeeling sensations, more narrow human mindset, a narrowing of a persons loves and dependencies. There is a desperation that pushes a person to meditate so often that unless Christ becomes so real that person would be more desperate.