Control

Sometimes it comes quickly,
While others, it takes its time.

Sometimes it last for what seems an eternity,
While others, it stays but for a moment.

Sometimes it is evasive,
While others, it sits within your grasp.

Sometimes it is peaceful,
While others, it is tormenting.

Sometimes it comes when we want it not,
While others, it refuses to come at all.

Sometimes it is welcomed like a lost friend,
While others, it is dreaded like a worst enemy.

Sometimes it is controlled by us,
While others, it takes control.

What is this thing I talk about?
It is sleep!