Emphasizing Confidence:
* As proud as a peacock strutting its feathers.
* As proud as a king on his throne.
* As proud as a general leading his troops to victory.
Emphasizing Self-Worth:
* As proud as a mountain standing tall and strong.
* As proud as a rose blooming in the sun.
* As proud as a ship sailing on the open sea.
Emphasizing Dignity:
* As proud as a lion in its den.
* As proud as a swan gliding gracefully on the water.
* As proud as an eagle soaring above the clouds.
Emphasizing Achievement:
* As proud as a parent watching their child succeed.
* As proud as an artist showcasing their masterpiece.
* As proud as a athlete reaching the finish line.
The best simile will depend on the specific context and the type of pride you want to convey.