Why do people have problems disciplining their children?

Many children simply don't know how to behave, some parents don't know when to draw the line, some don't know how to. Some parents are too harsh on their kids, causing them to act out more. Disciplining children is not an easy thing to do, and there is no 100% guarantee way to do it, each child is different

It should be at the center of any map going vertically: the prime meridian, as it passes through greenwich,  england, is considered 0 degrees longitude