To wait is to learn the spiritual grace of detachment (letting go), the freedom of desire. Not the absence of desire, but desire at rest. St John of the Cross lamented that "the desires weary and fatigue the soul; for they are like restless and discontented children, who are ever demanding this or that from their mother, and are never contented." Detachment is coming to a place where those demanding children are at peace. As David said,
I have stilled and quieted my soul;
like a weaned child with its mother,
like a weaned child is my soul within me.
Psalm 131:2
The word detachment might evoke wrong impressions. It is not a cold and indifferent attitude; not at all. Gerald May writes, "An authentic spiritual understanding of detachment devalues neither desire nor the objects of desire." Instead, it "aims at correcting one's own anxious grasping in order to free oneself for committed relationship to God."
From Journey of Desire by John Eldridge