This is a Zen story I first read in "Way of the Peaceful Warrior" by Dan Millman:
" An old man and his son worked a small farm with only one horse to pull the plow. One day, the horse ran away.
"How terrible," sympathized the neighbors. "What bad luck."
"Who knows whether it is bad luck or good luck," the farmer replied.
A week later, the same horse returned from the mountains leading five wild mares into the barn.
"What wonderful luck!" said the neighbors.
"Good luck? Bad luck? Who knows?" answered the old man.
The next day, the son, trying to tame one of the horses, fell and broke his leg.
"How terrible. What bad luck!"
"Bad luck? Good luck?"
The army came to all the farms to take the young men for war, but the farmer's son was of no use to them, so he was spared.
When unpleasant things happen to us, we tend to view it as bad luck, but not everything is as it seems. Sometimes we need the "bad" things to happen to help fuel the "good." It's the Yin and Yang of life. Looking back on our lives, we can sometimes see how a bad turn of events lead us to the right path we needed to be on and helping us become the person we are now. You don't need to see the silver lining in every situation, but trust that it's there. Remember without the mud the lotus wouldn't have grown.