a guiding light

a guiding light/spirit

someone who influences a person or group and shows them how to do something successfully She was the founder of the company, and for forty years its guiding light.

Common Names:

Name	Pronounced	Usage
Svanhild	-	Norwegian, Norse Mythology
Hershel	-	Yiddish
Leolin	-	Welsh
Angell	['eindʒəl]
Dariush	-	Persian
Lalia	-	English (Rare)