go for broke

go for broke (to risk everything in order to achieve the result you want ) — пан или пропал; идти ва-банк | стараться изо всех сил; лезть из кожи вон

Example: She decided to go for broke and pursue her acting career full-time.

see also
[кто не рискует, тот не пьет шампанское]
[волков бояться — в лес не ходить]
[sink or swim]