“What spoils kids is not letting them taste the natural consequences of their mistakes. When we give them the impression that their choices don’t have natural, logical consequences and we rescue them from those — when we say, ‘Hey, you do that one more time, I’m going to take that thing away,’ and then we don’t take that thing away — that’s actually what spoils kids.”

Source: A family therapist says too many parents make the same mistake and end up with spoiled kids – SFGate