lose sleep (over (someone/something))

to be worried and unable to relax because of something.

An asteroid could hit the earth, but it's not something you should lose sleep over.

• keep an eye on someone
• keep an eye on something
• keep an eye out
• keep an eye out for
• keep an eye out for someone
• keep an eye out for something
• keep an open mind
• keep a straight face
• keep at
• keep at arm's length
• keep at bay
• keep a tight rein on
• keep a tight rein on someone
• keep a tight rein on something
• keep at something
• keep a weather eye on
• keep a weather eye on someone
• be sacrificed on the altar of
• be sacrificed on the altar of something
• be said for
• be said for doing something
• be said for something
• be scared out of mind
• be scared out of your mind
• be scared shitless