have a good head on your shoulders

have a good head on (one's) shoulders

To be capable of making sound, responsible decisions. Joe has a good head on his shoulders, so I highly doubt that he would go to Vegas and gamble all his money away.
See also: good, have, head, on, shoulder

have a good ˈhead on your shoulders

be a sensible person: Don’t worry about the children — Laura’s with them and she’s got a good head on her shoulders.
See also: good, have, head, on, shoulder