When the student is ready, the master appears - Buddhist Proverb.

Swamimalai Murugan from Skanda Purana.

It doesn't matter who gives an advice. It might be your subordinate, your children, a kid in the street or a beggar. All that is important is the lesson. Next time when someone, whom you think is inferior to you, gives you an advice or a lesson, open up your ears and be a student.