σωφροσύνη/sōphrosunē

This word is an idea. It is a noun.

This word can mean soundness of mind. When used in this way, this word can be used to talk about a characteristic of a person who thinks rightly.
This word can mean self-control. This is the act of controlling one’s desires.

See: Acts 26:25; 1 Timothy 2:9, 15