guiding star

Translations
путеводная звезда
His mother was his guiding star throughout his career.
Его мать была его путеводной звездой на протяжении всей его карьеры.
Definitions
A guiding star is a metaphorical term that refers to a person, principle, or idea that provides direction, inspiration, or support in one's life or decision-making process.
Words
star

noun
звезда
guiding

adjective
направляющий