complacence

Definition

Pleasure or satisfaction with oneself or one's achievements, often excessive.

हिन्दी स्वयं या अपनी उपलब्धियों के प्रति संतुष्टि या संतोष, अक्सर अत्यधिक।

Example

"His complacence after the first victory led to a lack of preparation for the next round."