push one's luck

1. Also, press one's luck. Risk one's good fortune, often by acting overconfidently, as in We've gotten all but one of the concessions we asked for; demanding that last one would be pushing our luck, or You've done very well so far, but don't press your luck. [Early 1900s]

Example Sentences

“I hope I never have to read out of it again. One shouldn’t push one’s luck.”

From Literature

But the new director has a reputation for knowing that one should not push one’s luck too far.

From Newsweek