Calm down and breathe.
So...why are you mad? This is a good thing. I know how hard it is to give them credit when they do the right thing, but he is doing the right thing. It doesn't in any way threaten your relationship with your son. It doesn't make you any less a good parent. Besides, just because he's doing one thing right doesn't mean he's all of a sudden going to be Dad of the Year...and even if it did, that would be a good thing, too!
