I was going through a sort of rough patch; my depression had me at an all-time low. I found it hard most days to even simply smile. On one particularly rough day, I met an older man who completely made my day by telling a corny joke. Ordinarily, I wouldn't have laughed nor even responded with a small smile. But I was caught off guard and laughed so hard that I had tears of joy! Since then, I have made it my sole mission to make others' days the way he made mine. It's true: laughter really can be the best medicine.