That kind of self-respect is a discipline, a habit of mind that can never be faked but can be developed, trained, coaxed forth. It was once suggested to me that, as an antidote to crying, I put my head in a paper bag. As it happens, there is a sound physiological reason, something to do with oxygen, for doing exactly that, but the psychological effect alone is incalculable: it is difficult in the extreme to continue fancying oneself Cathy in “Wuthering Heights” with one’s head in a Food Fair bag. — Joan Didion, Slouching Towards Bethlehem
I used to do exactly this when I was a little kid. If I was upset I would sneak down into the kitchen, cut eye holes and draw a frown on a paper bag, put it on my head and walk into the living room to sit down on the couch next to my parents. In my 7 year old mind I was really letting them know what was up.