thank your lucky stars
US /θæŋk jʊər ˈlʌk.i stɑːrz/
UK /θæŋk jʊər ˈlʌk.i stɑːrz/
1.
to be grateful for good fortune or for having avoided something bad
:
•
You should thank your lucky stars you didn't get caught in that traffic jam.
•
I thanked my lucky stars that I remembered my passport at the last minute.