Mary was a poor milk-maid. Every day, she would milk the cows, carry the milk in a pot to market and sell the milk to earn little money. She had a dream to earn more money. Once, Mary was headed to the market carrying a pot of fresh milk on her head.
On her way, she starts daydreaming. She says to herself “Today I will buy eggs with the money I make from selling milk.
The eggs will hatch into chickens which will grow into hens. Then I will sell the hens and with that money, buy a big house.
When everyone in the village asks me about the secret of my wealth, I’ll refuse to tell and toss my head.”
While saying so, Mary actually tosses her head. The pot fell down and spills the milk on the ground.
Moral of the story: Do not count your chickens before they hatch.