Cf: Delay breeds loss (is dangerous) (Am.). Delays are dangerous (Br.). Delays have dangerous ends (Am., Br.). Не who hesitates is lost (Am., Br.). Не who lingers is lost (Am.). Kill time and time will kill you (Am.). Procrastination brings loss (Br.)
Русско-английский словарь пословиц и поговорок. Академик.ру. 2013.