春风得意

idiom

to be flushed with success; to ride high

The idiom originates from a Tang Dynasty poem by Meng Jiao describing the joy of passing the imperial examination (jinshi). Today, it broadly describes the elation of any kind of success, such as career advancement, personal achievement, or smooth progress. Often used with a slightly admiring or descriptive tone, but can sometimes carry a nuance of smugness if used critically.