Analysis of Ive seen the dark side of life

I've seen the dark side of life,
It comes with so much strife,
Happiness is only a dream,
It turns to a trickle from a stream,
You lose all hope,
Feelings left to cope,
Alone and left to the darkness,
You'll lose yourself and become a carcass,
Worthless becomes more than a feeling,
You'll want to hang from the ceiling,
Time is for the living not the dead,
Dark thoughts fill every part of your head,
Yes ive seen the dark side of life,
At one point I couldn't be trusted with a knife,