The feeling of the desert comes because of the resistance of the vital which wants life to be governed by desire. If that is not allowed, it regards existence as a desert and puts that impression on the mind.
It is because the vital was very much under the grip of its desires and so, now that it is separately active, not controlled by mental will, it kicks and cries whenever its desires are not satisfied. This is an ordinary movement of the human vital when not dominated and kept in its place by the mental will.
The vital can be all right when things are going on swimmingly, but when difficulties become strong, it sinks and lies supine. Also if a bait is held out to the vital ego, then it can become enthusiastic and active.
The nervous being is under the influence of the vital forces; when they are denied or pushed out, it becomes depressed and wants to call them back — for it is accustomed to get the pleasure and strength of life from the vital movements and not from the spiritual or divine Force above.
The vital consecration is to offer all the vital nature and its movements to the Divine so that it may be purified and only the true movements in consonance with the Divine Will may be there and all egoistic desires and impulses disappear.
Thus came, born from a blind tremendous choice,
This great perplexed and discontented world,
This haunt of Ignorance, this home of Pain:
There are pitched desire's tents, grief's headquarters.
A vast disguise conceals the Eternal's bliss.