whole world came crashing down around

your whole world came crashing down around you

  also your whole world (was) turned upside down
if your whole world comes crashing down around you, something unpleasant happens in your life that suddenly makes you feel very upset or confused Suddenly they weren't popular any more, nobody wanted to buy their records, and their whole world came crashing down around them. When I found out he'd had an affair, my whole world turned upside down.
See set the world on fire, think the world of