third time lucky
The belief or hope that the third attempt at something will be successful. Primarily heard in UK. I hope to make it third time lucky after failing this test twice already!
third time lucky
after twice failing to accomplish something, the third attempt may be successful. Third time lucky has been proverbial since the mid 19th century; a US variant is third time is the charm .
third time ˈlucky
(American English also third time is the ˈcharm) used when you have failed to do something twice and hope that you will succeed the third time: I missed again! Oh well, third time lucky!