Well begun, is half done.

Meaning
Starting properly ensures the speedy completion of a process. A – beginning is often blocked by one or more obstacles (potential barriers) the removal of which may ensure the smooth course of the process.

Source for meaning and proverbs: Paczolay, Gyula (1997). European Proverbs in 55 languages. DeProverbio.com. p. 228. ISBN 1-875943-44-7.

Albanian
Fillimi i mbarë është gjysma e punës.

Basque
Untsa habiatu den lana, erdi akabirik.
Translation: Well begun, is half done.

Catalan
Obra començada, mig acabada.
Translation: The work started, is half finished.

Czech
S chutí do toho a půl je hotovo.

Esperanto
Plej granda potenco kuŝas en la komenco.
Translation: The beginning is the most important.

Italian
Buon principio fa buon fine.
Translation: A good start makes a good end.

Karelian
Hyvä zavoduš — puloi dielua.

Korean
시작이 반이다
Transliteration: Shijaki banida.
Translation: Starting is half the task.

Lithuanian
Gera pradžia — pusė darbo.'

Maltese
Bidu tajjeb, nofs ix-xogħol.

Polish
Dobry początek - połowa roboty.

Romani
Lel the tacho pirrow, an' it's pars kaired.
Translation: He who starts well is in the middle of the work.

Slovak
Dobrý počiatok - polovica práce.

Slovenian
Dober pocitek je pol dela.

Turkish
İyi bașlamak yari btirmektir.