rest on your laurels
idiomPart oflaurel
rest on your laurels — idiom
1. to be so satisfied with achievements you have already made that you stop making
1.idiom
Definition
to be so satisfied with achievements you have already made that you stop making an effort to do anything new or better
Example
Jason had won the race twice, but his coach told him he could not rest on his laurels if he wanted to win again.
The company's founder warned the team not to sit on their laurels after the successful product launch.