In my teaching days in India, when I would remind a student that he was looking a little gloomy, he would object. "But sir, it's my face." I would reply, "Yes, but it's we who have to look at it."
Not even the look on our face is our own business; all these things affect the people around us.
— Eknath Easwaran in The Bhagavad Gita for Daily Living, Vol.2