[from Comfortable with Uncertainty by Pema Chodron, h/t Ken Lauher]
A BIG, BURLY SAMURAI comes to a Zen master and says, "Tell me the nature of heaven and hell."
The Zen master looks him in the face and says, "Why should I tell a scruffy, disgusting, miserable slob like you? A worm like you, do you think I should tell you anything?"
Consumed by rage, the samurai draws his sword and raises it to cut off the master's head.
The Zen master says, "That's hell."
Instantly, the samurai understands that he has just created his own hell - black and hot, filled with hatred, self-protection, anger, and resentment. He sees that he was so deep in hell that he was ready to kill someone. Tears fill his eyes as he puts his palms together to bow in gratitude for this insight.
The Zen master says, "That's heaven."