You should always have your head screwed on the right way.你一定要保持頭腦清醒。
I’ll write it on my book,I have a head like a sieve.
He has a good head for figures=He is good at math.
He’s quite out of touch with reality,He really has his head in the clouds.
Max is top of the class,he is head and shoulders above others.
When meet challenges,we can not bury our head in the sand .What we should do is to face them.