Depression is being lonely in a room full of people 
Depression is being constantly tired but never able to sleep 
Depression is longing to be with others yet not being able to cope with company 
Depression makes you lose your appetite and eat yourself fat 
Depression is smiling to hide the pain inside 
Depression is when the soul dies but the body keeps on living 
Depression is forgetting who you used to be  
Depression is not knowing if you could survive without it 
Depression is being sad when nothing is wrong 
Depression is not caring whether you live or die 
Depression is having no interest in the things you used to love 
Depression is lying awake for hours in bed at night contemplating the best way to kill yourself only to realise that you can’t be bothered.
Ricky Baker
http://www.poemhunter.com/poem/dealing-with-depression/