Fathom out.

I am out of kilter.
Something is not right.
I feel it in the day,
And long in to the night.
Sleeping can make it easier,
But it doesn't go away.
Just waits for another morn,
When Sun is in its way.
If I knew what was driving it,
Or what was sitting wrong with me,
I'd be able to tackle it,
And set my tied nerves free.
Unfortunately my perceptions,
Seem a little awry,
And while I know something's not right,
I cannot yet fathom out why.