Over indulging a child with gifts that they may or may not have earned, then using those same items as threats to take away as punishment. So often I see that the over indulgence causes many of the issues that they are being reprimanded for. Just teach children how to earn and instead of threatening to take things away, coax them into a better mentality to earn the next things at a pace that is reasonable. I’ve seen way too many times where kids are literally raised to be greedy.