“Bite the bullet”in other languages

Same idea, different pictures

English and German both bite down on something. In English it's a bullet, usually explained as what soldiers clenched in their teeth during surgery without anesthetic; Rudyard Kipling put the phrase in print in 1891. German bites into a sour apple, in den sauren Apfel beißen.

Galician turns its guts into heart, facer das tripas corazón: when there's no courage left, you make some out of whatever you have.