your luck is in
US /jʊər lʌk ɪz ɪn/
UK /jʊər lʌk ɪz ɪn/

1.
anda bernasib baik, nasib anda baik
used to say that someone is having good luck
:
•
You found a twenty-dollar bill on the street? Your luck is in!
Anda jumpa wang dua puluh dolar di jalan? Anda bernasib baik!
•
If you get the last piece of cake, then your luck is in.
Jika anda mendapat kepingan kek terakhir, maka anda bernasib baik.