A few days ago, a patient of mine taught me a great lesson. He told me this:
"The man who has no shoes doesn't know how well he has it, til he's met the man who has no feet"
... and then he cried on me for feeling sorry for another patient he met in the waiting room who has metastatic cancer but is all alone.
He is absolutely right, there is always someone else worse off than you no matter how bad you think your situation is, so quit feeling sorry for yourself and start going out there to make a difference!