Cf: Abundance of things engenders disdainfulness (Br.). Eat your honey, but stop when you are full (Am.). Even too much honey nothing else than gall (Br.). If in excess even nectar is poison (Br.). Nothing in excess is best (Am.). Too much honey cloys the stomach (Br.). Too much of a good thing (Am., Br.). Too much of a good thing is worse than none at all (Am.). Too much pudding chokes the dog (Br.)
Русско-английский словарь пословиц и поговорок. Академик.ру. 2013.