press (one's) luck

To risk losing the good favor or fortune one has garnered thus far by brashly or overconfidently seeking more. I know you're in the boss's good graces now, but don't press your luck: she's been known to turn on people for getting too cocky. I've had some good winnings at blackjack, but I don't think I should press my luck any further.

Common Names:

Name	Pronounced	Usage
FermÍN	-	Spanish
Tahmasp	-	Ancient Persian
Sidney	['sidni]
Bartol	-	Croatian (Rare)
Petia	-	Russian, Bulgarian
Dilbert	DIL-burt	Popular Culture