Idioms and Phrases with in one's glory
in one's glory
At one's best, happiest, or most gratified. For example, She was in her glory playing her first big solo, or In the classroom, this teacher's in his glory. [c. 1800] Also see in one's element.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.