There are a few lessons that can be gleaned from the story of the Grinch. First, it is never too late to change. The Grinch starts off as a grumpy, selfish character, but he eventually learns the true meaning of Christmas and changes his ways. Second, the holiday season is about more than just gifts and material possessions. The Grinch learns that the true spirit of Christmas is about giving, not receiving. Finally, it is important to be true to yourself. The Grinch tries to force himself to be something he's not, but in the end, he realizes that it's better to just be himself.