That half-death has become a torment to the soul, which neither allows one to sleep nor to truly wake up.

Imagine a state so painful, it's like being half-dead. It's not a complete end, but a constant torment that weighs heavily on your spirit. This feeling is so pervasive that it doesn't allow you the peace of sleep, nor does it let you truly be awake and functional. You're stuck in a painful limbo, unable to rest or move forward, trapped between two worlds. It's a deep, weary ache that drains all your energy and leaves you feeling utterly helpless. This couplet beautifully captures that agonizing, suspended reality.