Have your head screwed on (right/the right way) verb phrase
To think wisely to make a right decision and behave in a clever way
I believe in Johnny, he always has his head screwed on the right way.
In our team, the leader is always the one who has her head screwed on right.
Although she is old, she seems not to have her head screwed on the right way.
Before making any decisions, you should have your head screwed on right.
If you say someone is level-headed, you allude to his ability to remain calm and rational in the face of adversity.
To be mentally calm and not affected by exceptional changes.
The verb "have" should be conjugated according to its tense.