Lightning never strikes twice
umeme haupiɡi mara mbili mahali pamoɟa
In Swahili Umeme haupigi mara mbili mahali pamoja.
This Swahili idiom is a direct translation of the English one.
Example
"Baada ya kushindwa, alifikiria: 'Umeme haupigi mara mbili mahali pamoja', na akajaribu tena."