It breaks my heart to see you like this.
And I don't even know what it is....
I am sure you will feel better tomorrow.
But what has brought back all this sorrow.

Sweet dreams now and in the morning
when you open your eyes & can't stop yawning
Take in a deep breath & breathe it all away
Yesterday's sorrows don't belong in today.

Tia Maria

http://www.poemhunter.com/poem/leave-yesterday-behind/