Half empty

Halfway through the night,
Or so I thought!
There’s a glimmer of light on the horizon,
Or so my eyes tell me.
I dropped a cup on the table,
I perceive it as half-full.

But in reality,
I am nowhere near.
The more I strive,
The further breakthrough seems.
The more I fight,
The bloodier the battle becomes.

The sky is bleak,
And my mood is meek.
I just want it to end.
But when would it?