Var.: Плохое начало - плохой и конец
Cf: A bad beginning has a bad (makes a worse) ending (Br.). A bad day never has a good night (Am.). If you miss the first buttonhole, you will not succeed in buttoning up your coat (Am.). An ill beginning, (has) an ill ending (Br.). Ill begun, ill done (Br.), So goes Monday, so goes all the week (Am.)Русско-английский словарь пословиц и поговорок. Академик.ру. 2013.