burn (one's) boats

Translations
сжигать мосты; делать необратимый шаг
He burned his boats by quitting his job without another offer.
Он сжег мосты, уволившись с работы без другого предложения.
Definitions
To make a decision or take an action that eliminates any possibility of retreat or reversal, often by severing ties or destroying options.
Words
boat

noun
лодка