自满 (zì mǎn): Complacent (Adjective) — Meaning & Stroke Order

It's hard to make further progress if one becomes complacent after achieving a little success.

After achieving some success, she became complacent and stopped studying hard.

We must never become complacent because of a temporary lead, as our opponents could overtake us at any time.

Lao Wang, don't get complacent; the success of this project was entirely due to teamwork.