I feel so sad.
It won't go away.
I feel it all hours.
I feel it all days.
I try to express it,
But I can't in speech.
This barrier of silence,
I need to breach.
I should be happy.
I should be glad.
But all I am now
Is raving mad.
Fernando Alvarez
http://www.poemhunter.com/poem/so-sad/