humility in the portrait gallery of fame

“There’s always a chastening corrective in the thought that some of them may have printed your portrait. When once you’ve seen your features hurriedly reproduced in the Matin, for instance, you feel you would like to be a veiled Turkish woman for the rest of your life.”
And Youghal gazed long and lovingly at his reflection in the nearest mirror, as an antidote against possible incitements to humility in the portrait gallery of fame.

Could anyone explain the bold part?