Once on a hot day, a thirsty crow flew over the fields looking for water. Crow was looking for water for long but was not able to find any. After a little while, he saw a jug of water below. Crow blew straight down to jug. Crow saw that there was some water inside jug but crow was not able to reach it using its beak. Crow tried to push it head inside but still couldn't reach because neck of jug was too narrow. Not able to reach inside, crow tried to push jug down so that water flow down but jug was too heavy. Crow sitting on jug thought for a while. Then it looked around and saw some pebbles lying near by. Seeing the, suddenly crow got an idea. It started picking up those pebbles one by one and dropped each of them in jug. As more and more pebbles filled in jug, water level kept rising. Crow plan worked. Soon, water it was high enough for crow to drink. 
When we cannot get what we want, we pretend that it is not worth having. 