Like a mother and father who punish a young child, be it spanking, or grounding, or otherwise...and from that child's perspective it is the end of the world....loving parents know it is not, that there are years of life ahead, and the lessons taught and learned by such an experience will benefit that same child in the years to come.
We are God's children and He views us similarly...with love...and there is an eternity before us that we do not comprehend, and rarely appreciate at this point.
That is not a psychosis, just an attempt to grasp that eternal perspective.