Stress. It has many forms.
I listened to this TED talk Friday and really enjoyed it. Perhaps it will be something that resonates with you as well. (Note to Caitlan, I loved that you shared it too)
To feel lost
To be left out in the dark
To be kicked
When you're down
To feel like you've been pushed around
To be on the edge of breaking down
And no one's there to save you
No you don't know what it's like
Welcome to my life
http://youtu.be/r0U0AlLVqpk