Two children were brought to a child psychologist.
The first child was an incurable optimist. The second child was a total pessimist. The pessimist was placed in a room full of toys. The optimist was put in a room full of horse manure. The two children were closely observed.
The psychologist watched the pessimist child pile all the toys neatly and then sat on the opposite side of the room. When asked why he did this, he replied, "Some of the toys have sharp edges and they might hurt me."
Then the psychologist observed the optimist kid who was throwing the horse dung all over the place in utter glee. When asked why he was doing this, his response was, "With all this horse s__t, there's got to to be a pony in here somewhere!"