the upsetting of one's stomach: one's own vision may suffice

Roquentin's bout with the mirror is familiar to me. I have felt this dissimilarity to myself, and I cannot understand it. How everyone seems familiar with their faces, but everytime I look into a mirror I am a stranger to myself. In a shop I happend to glance up and for a moment I am shocked because someone is staring at me, and then I realize it is myself. And strangely, I can never make myself familiar with my face, ro recognize myself. For if I look in a mirror too long, I grow to hate myself. I 'turn into a monkey'