be in (one's) element

To be doing something that one is very comfortable with or proficient in. My mother is in her element in the kitchen and can make just about any dish.

Common Names:

Name	Pronounced	Usage
Vali	-	Romanian
Godwine	-	Anglo-Saxon
Felicidad	fe-lee-thee-DHAHD (Spanish), fe-lee-see-DHAHD (Latin American Spanish)	Spanish
LiÊN	-	Vietnamese
Hro&Eth;Gar	-	Anglo-Saxon
Cristian	-	Romanian