in for a penny, in for a pound

Etymology
Originally with reference to the fact that if one owed a penny, one might as well owe a pound (pound sterling, UK currency) as the penalties for non-payment were virtually identical in severity.

Proverb

 * 1) Having started something, one must see it through to its end, rather than stopping short; one must “go the whole hog”.

Antonyms

 * It's never the wrong time to make the right decision
 * It's never the wrong time to make the right decision

Translations

 * Catalan: perdut per perdut, la manta al coll, perdut per perdut, m'agafo allà on puc
 * Chinese:
 * Czech: když už, tak už
 * Dutch: wie a zegt, moet ook b zeggen
 * Esperanto: kiu sin enjungis, devas tiri
 * Finnish: asiat pitää viedä loppuun asti; joka leikkiin ryhtyy, se leikin kestäköön
 * French:, le premier pas engage au second, qui dit A, doit dire B, ,
 * German: ;
 * Hindi : कोशिश से बाज न आना
 * Hungarian:
 * Irish: ó loisc mé an choinneal loiscfidh mé an t-orlach
 * Japanese:
 * Macedonian: а́ко е бал, не́ка би́де ма́скенбал
 * Norwegian:
 * Bokmål: har man sagt A, må man også si B
 * Polish: jak się powiedziało A, to trzeba powiedzieć B
 * Portuguese: perdido por cem, perdido por mil, perdido por um, perdido por mil
 * Russian: взя́лся за гуж — не говори́, что не дюж
 * Spanish: de perdidos al río
 * Vietnamese: đâm lao thì phải theo lao