The speaker begins with a small, almost funny admission: even their best curses have worn out. Anger has been used up, and what's left is something rawer. They are "forced" to make a cry, and the comparison is to the desert night, which suggests something vast, dark, empty and strangely quiet, a sound that comes from a place with nothing around to answer it.
The last lines turn toward surrender. Living "on my knees" could mean humility, prayer, defeat, or simply being brought low by grief or frustration. "Out of all minding" is a puzzling phrase, but it seems to mean beyond caring, or beyond the reach of the thinking mind. The "if ever" makes this feel uncertain, as though the speaker is not sure such a life is possible.
The mood is bare and exhausted, but not hopeless. Language fails, and the poem finds something more honest underneath it.