Bless lucky star
Bless one's lucky star,and Bless one's stars.
Prov. Be thankful for a lucky thing that happened. (Also Bless my Stars!, a mild interjection of surprise.) I bless my lucky star that I met you, dear. I was in a car crash yesterday, and I bless my stars that no one was hurt. Alan: Look, honey! I gave the house a thorough cleaning while you were away. Jane: Bless my stars!