To make an irreversible decision or take a step from which there is no turning back.
Принять необратимое решение или сделать шаг, с которого нет возврата. (prinyat neobratimoe reshenie ili sdelat shag s kotorogo net vozvrata)
"By quitting his job, he crossed the Rubicon and committed to his startup dream."
"Уволившись с работы, он перешёл Рубикон и посвятил себя своей мечте о стартапе." (uvolivshis s raboty on pereshol rubikon i posvyatil sebya svoey mechte o startape)
to use the law in a dishonest way to achieve something
to make unrealistic plans or dreams
thinking or acting in an unusual or unconventional way
to remain loyal to your values, even in difficult situations
feeling slightly unwell or upset
to do something innovative or pioneering
