What is the moral of the story 'The Boy Who Cried Wolf'?

The lesson is to not tell lies because when the time comes that one is telling the truth, people may not believe you and that could have dire consequences.

The boy kept telling everyone there was a wolf, but he was lying. And then, in the end, a wolf does come and no one believes him!
The moral is "Do not ask for help if you do not need it. If you do, you won't get help help when you really do need it. "