How does Mr. Lamb suggest Derry deal with people who stare?

Mr. Lamb suggests that Derry should ignore the people who stare at him because of his appearance. He tells Derry not to let their stares bother him, as they are merely looking at the surface and not at the person he truly is. Mr. Lamb encourages Derry to focus on his own life and not let the judgment of others define him. By doing so, he can find peace and self-acceptance, much like Mr. Lamb does with his own disability. This advice helps Derry understand that his worth is not determined by others’ opinions or looks.

This question related to Chapter 5 English Vistas Class 12th NCERT.
From the Chapter 5, On the Face of It.
Give answer according to your understanding.