Heart of a Mouse?

Heart Of A MouseFrom Heart of the Enlightened By Anthony De Mello

A mouse was in constant distress because of its fear of the cat. A magician took pity on it and turned it into a cat. But then it became afraid of the dog.

So the magician turned it into a dog. Then it began to fear the panther, so the magician turned it into a panther. Whereupon it was full of fear for the hunter.

At this point, the magician gave up. He turned it into a mouse again saying, "Nothing I do for you is going to be of any help because you have the heart of a mouse."