Flat Broke.
By: Gary Paulsen. The companion to "Liar, Lair".
What its about.
Kevin’s parents have taken away his allowance to punish him for his creative lying. Never impeded by misfortune (or a guilty conscience or the advice of everyone wiser than he), he decides it’s a great time to make money. First he provides the perfect venue for poker games, even though some of his hapless player-victims begin to lose more money than they have. With the gambling business running admirably, but he starts cleaning neighbors’ garages, not worrying that depositing the trash in store Dumpsters is illegal.
It was powerful to me because it had a way to get to the reader, to make it feel like you were in the story.