Are you baffled about how to manage your child's difficult behavior? Remember that each step he takes toward better behavior is a move in the right direction.
Lack of motivation in a child means something different. This way you can find out what's behind the disinterest.
If it seems like your child argues with you about everything, try teaching him to negotiate instead of arguing.
It may be time to reconsider respect and empathy in your home. This is what you have to keep in mind.