A Zen master observes the people of his village celebrating a young boy's new horse as a wonderful gift. "We'll see," the Zen master says. When the boy falls off the horse and breaks a leg, everyone says the horse is a curse. "We'll see," says the master. Then war breaks out, the boy cannot be conscripted because of his injury, and everyone now says the horse was a fortunate gift. "We'll see," the master says again.
Sometimes a good 10 minute conversation at the end of the day makes all the frustration of the day worth it.