rest on one's laurels

Idioms  

1. Rely on one's past achievements, especially as a way of avoiding the work needed to advance one's status. For example, Now that Julian's in his eighties, he's decided to rest on his laurels and let some of the younger agents do the work. This term alludes to the crown of laurels awarded in ancient times for a spectacular achievement. [Late 1800s]

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Example Sentences

“One can’t rest on one’s laurels. The leadership provided in years past created a reality that now no longer exists. Other countries are moving much faster than Germany,” he said.

From Reuters

The secret is not to rest on one's laurels, but to kick on.

From The Guardian

After victory how delightful, how glorious to rest on one's laurels!

From Project Gutenberg