To make an irreversible decision or take a step from which there is no turning back.
後戻りできない決断をする、または戻れない一歩を踏み出す。 (atomodori dekinai ketsudan o suru mata wa modorenai ippo o fumidasu)
"By quitting his job, he crossed the Rubicon and committed to his startup dream."
"仕事を辞めて、彼はルビコン川を渡り、スタートアップの夢に全力を注いだ。" (shigoto o yamete kare wa rubikon gawa o watari sutaato appu no yume ni zenryoku o sosoida)
to remain behind or hesitate to act
to spend money freely or wastefully
honest and legal; without deceit
to reach an agreement or deal
To make the right moves to achieve success.
a place where powerful people make decisions secretly
