The idiom "Don't rest on your laurels" means essentially the same thing. "to be so satisfied with your own achievements that you make no effort to improve" ht

The idiom "Don't rest on your laurels" means essentially the same thing. "to be so satisfied with your own achievements that you make no effort to improve" http://idioms.thefreedictionary.com/rest+on+laurels http://idioms.thefreedictionary.com/rest+on+laurels