There once was a mouse who was very rich. He had a very nice house with a lot of really great food. The only thing was that the mouse never shared his good food or anything. But also, he always wanted more of everything. He owned an office building. He never paid his workers what they were worth. Most of his workers quit and got better jobs. One day business turned bad. The mouse lost everything. He didn't even have one piece of cheese left. But worst of all, he had no friends. 
Be happy with what you have. 