Stuck in my Head

Hello, Old Friend,
You've come again.
You're intangible,
I know,
But I can feel you there.
You're like imaginary
Whispers in the dark,
Or a song stuck in
My head.
It seems I just can't
Get rid of you,
No matter how much I
Sing of Bohemian ideals.
"Beauty, Truth, and Love,"
I preach.
But what good do any of
These do,
If my thoughts are always
Tinged with darkness?

*note: This is just capturing how I imagine I could feel if I was still in a darker place. But I'm not. So this is pretty much pure fiction (except for the fact that I love Beauty, Truth and Love. :P)