The advice comes from an American expert who's looked at lots of studies on how hard it is to go from being a child to a teenager.
Mood swings and being really sulky are part of becoming a teenager but can make things hard for the whole family.
'No yelling'
She says not being too strict, not yelling and making sure everyone is communicating are good ideas.
She warns too much discipline can make teenagers rebel even more.
Hear story
Chat about this
Vote: Should parents smack?
